{"id":5584,"date":"2023-10-09T10:32:26","date_gmt":"2023-10-09T08:32:26","guid":{"rendered":"https:\/\/www.cola5677.odns.fr\/uncategorized\/gem-optics-made-easy\/"},"modified":"2024-05-27T15:28:06","modified_gmt":"2024-05-27T13:28:06","slug":"gem-optics-made-easy","status":"publish","type":"post","link":"https:\/\/www.gemgazette.com\/en\/science-en\/gem-optics-made-easy\/","title":{"rendered":"Gem 101: Gem Optics Made Easy"},"content":{"rendered":"\n<p>For thousands of years, gems have captivated mankind with their mystical, dazzling beauty. However, the real magic often lies beneath their surface, in the optical phenomena that make these gems shine.<\/p>\n\n\n\n<p>In this article, we&#8217;ll take a simplified look at the main optical mechanisms that make these gems so extraordinary. From refraction to labradorescence, we reveal the secrets of their fascinating brilliance.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/64_file.png\" alt=\"CZ or cubic zirconia stone cut on a neutral background to illustrate the zircon.\" class=\"wp-image-129\" title=\"Dispersion in a CZ - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-600x450.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-768x576.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-300x225.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-800x600.png 800w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-400x300.png 400w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-200x150.png 200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">CZ or cubic zirconia &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-6a3231b26fe5efb9a000b716618fa9b8\"><strong>Refraction: The Game of Light<\/strong><\/h2>\n\n\n\n<p>One of the most amazing aspects of gem optics is the refraction of light. When light crosses the surface of a gem, it slows down and changes direction according to the angle of incidence. This phenomenon is responsible for the brilliance and scattering of light that create the shimmering sparkle in gems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-2b2b74419304602742bb709bea113429\"><strong>Dispersion: The Rainbow in the Stone<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/64_file.png\" alt=\"CZ or cubic zirconia stone cut on a neutral background to illustrate the zircon.\" class=\"wp-image-129\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-600x450.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-768x576.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-300x225.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-800x600.png 800w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-400x300.png 400w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-200x150.png 200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">CZ or cubic zirconia &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\t\t<div class=\"embedpress-gutenberg-wrapper aligncenter   ep-content-protection-disabled inline\" id=\"cf4223af-19b1-4d56-82ae-04a31b334146\">\n\t\t\t\t\t\t<div class=\"wp-block-embed__wrapper   \">\n\t\t\t\t<div id=\"ep-gutenberg-content-b6cfcd57c6edf6dd3adef29f431e32df\" class=\"ep-gutenberg-content\">\n\t\t\t\t\t<div \n\t\t\t\t\t\t >\n\t\t\t\t\t\t<div  class=\"ep-embed-content-wraper  insta-grid  \" \n\t\t\t\t\t\t \n\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<div class=\"ose-google-drive ose-uid-3f16e2d2952a61730ae98f3641088913 ose-embedpress-responsive\" style=\"width:600px; height:450px; max-height:450px; max-width:100%; display:inline-block;\"><iframe loading=\"lazy\" allowFullScreen=\"true\" title=\"\"  width=\"600\" height=\"450\" src=\"https:\/\/drive.google.com\/file\/d\/124R1I5GDmHUBa3HXJPP7901arDESrAu1\/preview\" ><\/iframe><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<style>\n\t\t.ose-youtube.ose-uid-3f16e2d2952a61730ae98f3641088913 {\n\t\t\twidth: px !important;\n\t\t\theight: px!important;\n\t\t\tmax-height: px !important;\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.ose-youtube.ose-uid-3f16e2d2952a61730ae98f3641088913>iframe {\n\t\t\theight: px !important;\n\t\t\tmax-height: px !important;\n\t\t\twidth: 100%;\n\t\t\tposition: relative !important;\n\t\t}\n\t\t\n\n\t\t.ose-uid-3f16e2d2952a61730ae98f3641088913 .wistia_embed {\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.alignright .ose-wistia.ose-uid-3f16e2d2952a61730ae98f3641088913{\n\t\t\tmargin-left: auto;\n\t\t}\n\t\t.alignleft .ose-wistia.ose-uid-3f16e2d2952a61730ae98f3641088913{\n\t\t\tmargin-right: auto;\n\t\t}\n\t\t.aligncenter .ose-wistia.ose-uid-3f16e2d2952a61730ae98f3641088913{\n\t\t\tmargin: auto;\n\t\t}\n\t\t.ose-uid-3f16e2d2952a61730ae98f3641088913 img.watermark{\n\t\t\tdisplay: none;\n\t\t}\n\t\t\n\t\t\n\n\t\t\n\n\t<\/style><style>\n\t\t.ose-matterport.ose-uid-3f16e2d2952a61730ae98f3641088913 {\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\t\t.ose-giphy.ose-uid-3f16e2d2952a61730ae98f3641088913 img{\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\n\n\n\t<\/style>\n\n\n<p>Dispersion is the phenomenon that separates white light into its different colors, like a prism. In gems, this creates those beautiful colored sparkles that are particularly visible in <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/diamond-properties-uses-and-virtues\/\">diamonds<\/a> and colored gemstones. The stronger the dispersion, the brighter and more vivid the colors.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-22821f0796448fcf4434644898f2f303\"><strong>The Shimmering Effect: The <abbr class='c2c-text-hover' title='Clear line on the stone surface created by natural or synthesized inclusions'>Cat&#8217;s Eye<\/abbr><\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/50_file.png\" alt=\"cat's eye chrome diopside green stone on neutral background to illustrate a green stone\" class=\"wp-image-111\" title=\"Cat's Eye effect in a Diopside - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file-600x450.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file-768x576.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file-300x225.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file-800x600.png 800w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file-400x300.png 400w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/50_file-200x150.png 200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><abbr class='c2c-text-hover' title='Clear line on the stone surface created by natural or synthesized inclusions'>Cat&#8217;s eye<\/abbr> chrome diopside &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\t\t<div class=\"embedpress-gutenberg-wrapper aligncenter   ep-content-protection-disabled inline\" id=\"7908bd8d-7094-472f-8fe2-54df6aeb1106\">\n\t\t\t\t\t\t<div class=\"wp-block-embed__wrapper   \">\n\t\t\t\t<div id=\"ep-gutenberg-content-4647913ae6e407a5acafa52173747ed0\" class=\"ep-gutenberg-content\">\n\t\t\t\t\t<div \n\t\t\t\t\t\t >\n\t\t\t\t\t\t<div  class=\"ep-embed-content-wraper  insta-grid  \" \n\t\t\t\t\t\t \n\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<div class=\"ose-google-drive ose-uid-65914f53e57d995c777e715f1345dd48 ose-embedpress-responsive\" style=\"width:600px; height:450px; max-height:450px; max-width:100%; display:inline-block;\"><iframe loading=\"lazy\" allowFullScreen=\"true\" title=\"\"  width=\"600\" height=\"450\" src=\"https:\/\/drive.google.com\/file\/d\/1c8-WLEIJm32k90Wj6dzcmiBZug9SddB-\/preview\" ><\/iframe><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<style>\n\t\t.ose-youtube.ose-uid-65914f53e57d995c777e715f1345dd48 {\n\t\t\twidth: px !important;\n\t\t\theight: px!important;\n\t\t\tmax-height: px !important;\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.ose-youtube.ose-uid-65914f53e57d995c777e715f1345dd48>iframe {\n\t\t\theight: px !important;\n\t\t\tmax-height: px !important;\n\t\t\twidth: 100%;\n\t\t\tposition: relative !important;\n\t\t}\n\t\t\n\n\t\t.ose-uid-65914f53e57d995c777e715f1345dd48 .wistia_embed {\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.alignright .ose-wistia.ose-uid-65914f53e57d995c777e715f1345dd48{\n\t\t\tmargin-left: auto;\n\t\t}\n\t\t.alignleft .ose-wistia.ose-uid-65914f53e57d995c777e715f1345dd48{\n\t\t\tmargin-right: auto;\n\t\t}\n\t\t.aligncenter .ose-wistia.ose-uid-65914f53e57d995c777e715f1345dd48{\n\t\t\tmargin: auto;\n\t\t}\n\t\t.ose-uid-65914f53e57d995c777e715f1345dd48 img.watermark{\n\t\t\tdisplay: none;\n\t\t}\n\t\t\n\t\t\n\n\t\t\n\n\t<\/style><style>\n\t\t.ose-matterport.ose-uid-65914f53e57d995c777e715f1345dd48 {\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\t\t.ose-giphy.ose-uid-65914f53e57d995c777e715f1345dd48 img{\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\n\n\n\t<\/style>\n\n\n<p>The chatoyant effect, also known as &#8220;<abbr class='c2c-text-hover' title='Clear line on the stone surface created by natural or synthesized inclusions'>cat&#8217;s eye<\/abbr>&#8220;, is a fascinating phenomenon that occurs in many gems, such as <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/moonstone-properties-uses-and-virtues\/\">moonstone<\/a>, <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/quartz-properties-uses-and-virtues\/\">quartz<\/a> and <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/scapolite-properties-uses-and-virtues\/\">scapolite<\/a>. It is caused by the presence of fine parallel inclusions in the stone that reflect light in a particular way. When the stone is cut into a cabochon (a smooth, rounded shape), a luminous, line-shaped sparkle appears on the surface, creating an effect similar to a <abbr class='c2c-text-hover' title='Clear line on the stone surface created by natural or synthesized inclusions'>cat&#8217;s eye<\/abbr>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-50ac501be5efa765af5888b55c92b5b7\"><strong><abbr class='c2c-text-hover' title='Clear star on the stone surface created by natural or synthesized inclusions'>Asterism<\/abbr>: The Star that Shines in Broad Daylight<\/strong><\/h2>\n\n\n\n<p><abbr class='c2c-text-hover' title='Clear star on the stone surface created by natural or synthesized inclusions'>Asterism<\/abbr> is a remarkable optical phenomenon that creates a six-rayed star visible on the surface of certain gems, such as the sapphire star or the <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/ruby-properties-uses-and-virtues\/\">ruby<\/a> star. This effect is similar to that of <abbr class='c2c-text-hover' title='Clear line on the stone surface created by natural or synthesized inclusions'>Cat&#8217;s Eye<\/abbr>. This is due to the presence of rutile needle inclusions that reflect light in a particular way, creating this sparkling star when the stone is cut into a cabochon.<\/p>\n\n\n\n<p>Fun Fact; <abbr class='c2c-text-hover' title='Clear star on the stone surface created by natural or synthesized inclusions'>Asterism<\/abbr> is actually <abbr class='c2c-text-hover' title='Clear line on the stone surface created by natural or synthesized inclusions'>Cat&#8217;s Eye<\/abbr> multiplied!<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-7d608086e862001c80c6e4b830a81c70\"><strong>Color: The Magic of Hue<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"645\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/200_file.png\" alt=\"garnet stones assorted with almandine, grossular, rhodolite, spessartite, color change, grandite, malaya and hessonite on white background to illustrate the garnet\" class=\"wp-image-404\" title=\"Assorted garnets - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/200_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/200_file-300x194.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/200_file-768x495.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/200_file-600x387.png 600w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/grenat-almandin-proprietes-utilisations-et-vertus\/\">Almandine<\/a>, <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/grossular-properties-uses-and-virtues\/\">grossular<\/a>, <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/rhodolite-properties-uses-and-benefits\/\">rhodolite<\/a>, spessartite, <abbr class='c2c-text-hover' title='Color changes according to the light source used, generally daylight and artificial light'>color change<\/abbr>, grandite, malaya and <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/hessonite-properties-uses-and-virtues\/\">hessonite<\/a> <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/garnet-properties-uses-and-virtues\/\">garnets<\/a> &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA<\/figcaption><\/figure>\n\n\n\n<p>The color of gems is an essential aspect of their beauty. It may be due to the presence of impurities, structural defects or the way light interacts with the stone&#8217;s crystalline structure. For example, blue sapphire derives its color from the presence of iron and titanium atoms, while <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/emerald-properties-uses-and-virtues\/\">emerald<\/a> derives its green color from the presence of chromium and vanadium.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-adae00e769e2a55f8b841fe54455e0f4\"><strong>Opalescence: Mysterious Radiance<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"1000\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/124_file.png\" alt=\"triplet of precious opal on neutral background to illustrate the opal\" class=\"wp-image-245\" title=\"Opalescence in an Opal triplet - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/124_file.png 750w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/124_file-450x600.png 450w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/124_file-225x300.png 225w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/124_file-600x800.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/124_file-300x400.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/124_file-150x200.png 150w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><figcaption class=\"wp-element-caption\">Precious opal triplet &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\t\t<div class=\"embedpress-gutenberg-wrapper aligncenter   ep-content-protection-disabled inline\" id=\"1da0f3d6-7fa9-40ef-99cf-bf821ca0064c\">\n\t\t\t\t\t\t<div class=\"wp-block-embed__wrapper   \">\n\t\t\t\t<div id=\"ep-gutenberg-content-5d4844225a6462dea2cbc605c21b12b4\" class=\"ep-gutenberg-content\">\n\t\t\t\t\t<div \n\t\t\t\t\t\t >\n\t\t\t\t\t\t<div  class=\"ep-embed-content-wraper  insta-grid  \" \n\t\t\t\t\t\t \n\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<div class=\"ose-google-drive ose-uid-527d3042f6ab632a4827a5eca667cdba ose-embedpress-responsive\" style=\"width:600px; height:450px; max-height:450px; max-width:100%; display:inline-block;\"><iframe loading=\"lazy\" allowFullScreen=\"true\" title=\"\"  width=\"600\" height=\"450\" src=\"https:\/\/drive.google.com\/file\/d\/1sRC-YAFmoXb7KeXsMQoeHaEPBjszFtvb\/preview\" ><\/iframe><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<style>\n\t\t.ose-youtube.ose-uid-527d3042f6ab632a4827a5eca667cdba {\n\t\t\twidth: px !important;\n\t\t\theight: px!important;\n\t\t\tmax-height: px !important;\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.ose-youtube.ose-uid-527d3042f6ab632a4827a5eca667cdba>iframe {\n\t\t\theight: px !important;\n\t\t\tmax-height: px !important;\n\t\t\twidth: 100%;\n\t\t\tposition: relative !important;\n\t\t}\n\t\t\n\n\t\t.ose-uid-527d3042f6ab632a4827a5eca667cdba .wistia_embed {\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.alignright .ose-wistia.ose-uid-527d3042f6ab632a4827a5eca667cdba{\n\t\t\tmargin-left: auto;\n\t\t}\n\t\t.alignleft .ose-wistia.ose-uid-527d3042f6ab632a4827a5eca667cdba{\n\t\t\tmargin-right: auto;\n\t\t}\n\t\t.aligncenter .ose-wistia.ose-uid-527d3042f6ab632a4827a5eca667cdba{\n\t\t\tmargin: auto;\n\t\t}\n\t\t.ose-uid-527d3042f6ab632a4827a5eca667cdba img.watermark{\n\t\t\tdisplay: none;\n\t\t}\n\t\t\n\t\t\n\n\t\t\n\n\t<\/style><style>\n\t\t.ose-matterport.ose-uid-527d3042f6ab632a4827a5eca667cdba {\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\t\t.ose-giphy.ose-uid-527d3042f6ab632a4827a5eca667cdba img{\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\n\n\n\t<\/style>\n\n\n<p>Opalescence is an optical phenomenon that gives <a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/opal-properties-uses-and-virtues\/\">opals<\/a> their unique beauty. It is caused by the presence of tiny spheres or fissures inside the stone, which diffuse light to create shimmering, changing plays of color. When light passes through these structures, it breaks down into different colors, creating the opalescent effect characteristic of opals.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-532cb40d65a02bb9aa1479bccbf5bbc5\"><strong>Labradorescence (or Schiller Effect, Adularescence): The Enigmatic and Lunar Glow<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/201_file.png\" alt=\"blue and yellow labradorite on a neutral background to illustrate a blue stone\" class=\"wp-image-405\" title=\"Labradorescence in Labradorite - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file-300x225.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file-768x576.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file-600x450.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file-800x600.png 800w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file-400x300.png 400w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/201_file-200x150.png 200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.gemgazette.com\/en\/gem-encyclopedia\/labradorite-properties-uses-and-virtues\/\">Labradorite<\/a> &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\t\t<div class=\"embedpress-gutenberg-wrapper aligncenter   ep-content-protection-disabled inline\" id=\"66c48779-cdae-4092-a714-3938ebf4aa83\">\n\t\t\t\t\t\t<div class=\"wp-block-embed__wrapper   \">\n\t\t\t\t<div id=\"ep-gutenberg-content-d42d070b07841a82508cd1f48ae5ea41\" class=\"ep-gutenberg-content\">\n\t\t\t\t\t<div \n\t\t\t\t\t\t >\n\t\t\t\t\t\t<div  class=\"ep-embed-content-wraper  insta-grid  \" \n\t\t\t\t\t\t \n\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<div class=\"ose-google-drive ose-uid-b4abd43e73c92e6369e999a31075879a ose-embedpress-responsive\" style=\"width:600px; height:450px; max-height:450px; max-width:100%; display:inline-block;\"><iframe loading=\"lazy\" allowFullScreen=\"true\" title=\"\"  width=\"600\" height=\"450\" src=\"https:\/\/drive.google.com\/file\/d\/1cQHsdlzTJxW4_F5_YqVR6D1xXihZcV-i\/preview\" ><\/iframe><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<style>\n\t\t.ose-youtube.ose-uid-b4abd43e73c92e6369e999a31075879a {\n\t\t\twidth: px !important;\n\t\t\theight: px!important;\n\t\t\tmax-height: px !important;\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.ose-youtube.ose-uid-b4abd43e73c92e6369e999a31075879a>iframe {\n\t\t\theight: px !important;\n\t\t\tmax-height: px !important;\n\t\t\twidth: 100%;\n\t\t\tposition: relative !important;\n\t\t}\n\t\t\n\n\t\t.ose-uid-b4abd43e73c92e6369e999a31075879a .wistia_embed {\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.alignright .ose-wistia.ose-uid-b4abd43e73c92e6369e999a31075879a{\n\t\t\tmargin-left: auto;\n\t\t}\n\t\t.alignleft .ose-wistia.ose-uid-b4abd43e73c92e6369e999a31075879a{\n\t\t\tmargin-right: auto;\n\t\t}\n\t\t.aligncenter .ose-wistia.ose-uid-b4abd43e73c92e6369e999a31075879a{\n\t\t\tmargin: auto;\n\t\t}\n\t\t.ose-uid-b4abd43e73c92e6369e999a31075879a img.watermark{\n\t\t\tdisplay: none;\n\t\t}\n\t\t\n\t\t\n\n\t\t\n\n\t<\/style><style>\n\t\t.ose-matterport.ose-uid-b4abd43e73c92e6369e999a31075879a {\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\t\t.ose-giphy.ose-uid-b4abd43e73c92e6369e999a31075879a img{\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\n\n\n\t<\/style>\n\n\n<p>Labradorescence, also known as the Schiller effect, is an extraordinary optical phenomenon found in labradorite and moonstone. These gems exhibit a range of shimmering colors that seem to shift as the stone is turned.<\/p>\n\n\n\n<p>Labradorescence is the result of light diffracting through thin layers inside the stone, creating a mysterious and enchanting spectacle of color.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/202_file.png\" alt=\"natural cut moonstone showing its transparent blue glow on a white background\" class=\"wp-image-406\" title=\"Adularescence in a Moonstone - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file-300x225.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file-768x576.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file-600x450.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file-800x600.png 800w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file-400x300.png 400w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/202_file-200x150.png 200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Moonstone &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\n<p>This phenomenon is sometimes called adularescence, especially on white stones. This optical phenomenon observed in moonstone creates a shimmering blue glow, similar to the glow of the moon, which gives moonstone its legendary charm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-af108797b0a74a0077a1840cca7263d2\"><strong>Aventurescence: The Adventurous Radiance<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.cola5677.odns.fr\/wp-content\/uploads\/2023\/12\/203_file.png\" alt=\"Cabochon sunstone showing its coppery adventurousness\" class=\"wp-image-407\" title=\"Adventurescence in a Sunstone - Photo by Laur\u00e9line Colliard, FGA\" srcset=\"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file.png 1000w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file-300x225.png 300w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file-768x576.png 768w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file-600x450.png 600w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file-800x600.png 800w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file-400x300.png 400w, https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/203_file-200x150.png 200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Sunstone &#8211; Photo \u00a9 by Laur\u00e9line Colliard FGA <\/figcaption><\/figure>\n\n\n\t\t<div class=\"embedpress-gutenberg-wrapper aligncenter   ep-content-protection-disabled inline\" id=\"23d2f79d-4dc5-41ce-8c1a-faf5a1555115\">\n\t\t\t\t\t\t<div class=\"wp-block-embed__wrapper   \">\n\t\t\t\t<div id=\"ep-gutenberg-content-ba2c98f04dbebaf33e33bbfb6d1fc368\" class=\"ep-gutenberg-content\">\n\t\t\t\t\t<div \n\t\t\t\t\t\t >\n\t\t\t\t\t\t<div  class=\"ep-embed-content-wraper  insta-grid  \" \n\t\t\t\t\t\t \n\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<div class=\"ose-google-drive ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26 ose-embedpress-responsive\" style=\"width:600px; height:450px; max-height:450px; max-width:100%; display:inline-block;\"><iframe loading=\"lazy\" allowFullScreen=\"true\" title=\"\"  width=\"600\" height=\"450\" src=\"https:\/\/drive.google.com\/file\/d\/1qBZ4O6cJVJnFw7rKwxlWI9T6XGnsKENs\/preview\" ><\/iframe><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<style>\n\t\t.ose-youtube.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26 {\n\t\t\twidth: px !important;\n\t\t\theight: px!important;\n\t\t\tmax-height: px !important;\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.ose-youtube.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26>iframe {\n\t\t\theight: px !important;\n\t\t\tmax-height: px !important;\n\t\t\twidth: 100%;\n\t\t\tposition: relative !important;\n\t\t}\n\t\t\n\n\t\t.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26 .wistia_embed {\n\t\t\tmax-width: 100%;\n\t\t}\n\n\t\t.alignright .ose-wistia.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26{\n\t\t\tmargin-left: auto;\n\t\t}\n\t\t.alignleft .ose-wistia.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26{\n\t\t\tmargin-right: auto;\n\t\t}\n\t\t.aligncenter .ose-wistia.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26{\n\t\t\tmargin: auto;\n\t\t}\n\t\t.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26 img.watermark{\n\t\t\tdisplay: none;\n\t\t}\n\t\t\n\t\t\n\n\t\t\n\n\t<\/style><style>\n\t\t.ose-matterport.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26 {\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\t\t.ose-giphy.ose-uid-0d37f9a30ccbd3bc86b08fc593a82b26 img{\n\t\t\tposition: relative;\n\t\t\twidth: px !important;\n\t\t\theight: px !important;\n\t\t\tmax-width: 100%;\n\t\t  }\n\n\n\n\t<\/style>\n\n\n<p>Adventurescence is a captivating optical phenomenon that manifests itself in certain gems, such as sunstone. This is due to the presence of tiny inclusions of mica or fuchsite inside the stone, which reflect light to create a shimmering or sparkling effect. This unique feature adds a touch of adventure to the beauty of the gems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-nv-site-bg-color has-cool-to-warm-spectrum-gradient-background has-text-color has-background has-link-color wp-elements-7d250bf9b0ec20ce9dde07adef1894df\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Gem optics is a fascinating field that reveals the secrets of the sparkling beauty of these precious stones.<\/p>\n\n\n\n<p>Whether it&#8217;s refraction, dispersion, shimmer, <abbr class='c2c-text-hover' title='Clear star on the stone surface created by natural or synthesized inclusions'>asterism<\/abbr>, color, opalescence, labradorescence or adularescence, each optical phenomenon contributes to the creation of unique and beautiful gems that have captivated our imagination for centuries.<\/p>\n\n\n\n<p>The next time you admire a gem, remember that its beauty goes far beyond its surface, hiding a whole fascinating optical story.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gems have entranced humanity for millennia with their mystical beauty, but their true allure lies in the optical phenomena beneath their surface. From refraction creating brilliant sparkle to dispersion forming colorful sparkles, each aspect contributes to their unique beauty. The chatoyant effect and <abbr class='c2c-text-hover' title='Clear star on the stone surface created by natural or synthesized inclusions'>asterism<\/abbr> add enchanting visual effects, while color and opalescence play a crucial role in their appeal. Labradorescence and aventurescence further enhance their charm. Gem optics unveils the secrets behind these precious stones, showcasing a mesmerizing optical story that goes beyond surface beauty. Each gem holds a fascinating optical tale, making their beauty truly extraordinary and timeless.<\/p>\n","protected":false},"author":244091248,"featured_media":4664,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","fifu_image_url":"","fifu_image_alt":"","two_page_speed":[],"footnotes":""},"categories":[1741],"tags":[],"table_tags":[],"class_list":["post-5584","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png","uagb_featured_image_src":{"full":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",1000,750,false],"thumbnail":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-150x150.png",150,150,true],"medium":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-300x225.png",300,225,true],"medium_large":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-768x576.png",768,576,true],"large":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",1000,750,false],"1536x1536":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",1000,750,false],"2048x2048":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",1000,750,false],"ultp_layout_landscape_large":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",1000,750,false],"ultp_layout_landscape":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-870x570.png",870,570,true],"ultp_layout_portrait":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-600x750.png",600,750,true],"ultp_layout_square":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-600x600.png",600,600,true],"neve-blog":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-930x620.png",930,620,true],"tenweb_optimizer_mobile":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",600,450,false],"tenweb_optimizer_tablet":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file.png",768,576,false],"yarpp-thumbnail":["https:\/\/www.gemgazette.com\/wp-content\/uploads\/2023\/12\/64_file-120x120.png",120,120,true]},"uagb_author_info":{"display_name":"Laur\u00e9line Colliard FGA","author_link":"https:\/\/www.gemgazette.com\/en\/author\/laurelinecolliardfga\/"},"uagb_comment_info":0,"uagb_excerpt":"Gems have entranced humanity for millennia with their mystical beauty, but their true allure lies in the optical phenomena beneath their surface. From refraction creating brilliant sparkle to dispersion forming colorful sparkles, each aspect contributes to their unique beauty. The chatoyant effect and asterism add enchanting visual effects, while color and opalescence play a crucial&hellip;","_links":{"self":[{"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/posts\/5584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/users\/244091248"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/comments?post=5584"}],"version-history":[{"count":3,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/posts\/5584\/revisions"}],"predecessor-version":[{"id":6036,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/posts\/5584\/revisions\/6036"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/media\/4664"}],"wp:attachment":[{"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/media?parent=5584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/categories?post=5584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/tags?post=5584"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/www.gemgazette.com\/en\/wp-json\/wp\/v2\/table_tags?post=5584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}