
{"id":4348,"date":"2015-06-09T08:00:23","date_gmt":"2015-06-09T12:00:23","guid":{"rendered":"http:\/\/admin.acceleratingscience.com\/?p=4348"},"modified":"2026-01-06T18:48:32","modified_gmt":"2026-01-06T18:48:32","slug":"video-how-does-a-lab-grade-diamonds","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/mining\/video-how-does-a-lab-grade-diamonds\/","title":{"rendered":"Video:  How Does a Lab Grade Diamonds?"},"content":{"rendered":"<p><a href=\"http:\/\/www.gemfacts.com\/VideoTour.aspx\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" style=\"float: right;border: 0;margin: 10px\" title=\"GCAL Video\" src=\"http:\/\/admin.acceleratingscience.com\/wp-content\/uploads\/2015\/06\/gcalvideo.jpg\" alt=\"GCAL Video\" width=\"350\" height=\"241\" \/><\/a>Did you ever wonder how those mined chains of carbon atoms that have crystallized become the stars of engagement rings, necklaces, bracelets and even crowns? They were formed in the earth over the course of thousands of years, under crushing pressures and intense heat, and yet they have emerged as showcase pieces in jewelry stores.\u00a0 After the diamond-bearing ore is crushed and processed, the rough diamonds are sorted into three categories: gem quality, industrial quality, and boart (used as an abrasive in cutting tools).  The gem-quality diamonds are then classified, and valued, according to the 4 C\u2019s of diamond quality. This accredited gem certification and assurance laboratory shows how those 4 C\u2019s are determined: <\/p>\n<ul>\n<li><strong>Carat<\/strong>:\u00a0 Weight: Precise measurement of carat weight using electronic balances to a thousandth of a carat and then measured with an optical scanning device that creates a diagram of every facet and angle.<\/li>\n<li><strong>Color:<\/strong>\u00a0 Color is graded on a scale from D to Z with each letter representing a slightly more saturated color.\u00a0 Diamonds are examined in a standard lighting environment and are compared to a set of precision master color diamonds.\u00a0 It takes an expert eye rather than technology to grade the color.\u00a0 The diamonds are also checked for fluorescence, which is a permanent identifying characteristic of the diamond.<\/li>\n<li><strong>Clarity:<\/strong> Clarity is graded by examining the diamond under a microcope to assess internal and external characteristics such as crystals and feathers.\u00a0 Gemologists also note inclusions, including the number, type, position and relief.\u00a0 A 10X loupe is also used to view the diamond in several different positions.<\/li>\n<li><strong>Cut:<\/strong>\u00a0 A light performance analysis system can assess and capture an image of the diamond\u2019s optical brilliance and optical symmetry.<\/li>\n<\/ul>\n<p> Although portable X-Ray Fluorescence cannot measure carbon, the technology can be deployed to measure Zr, and thus, to distinguish between the diamond look-alike, cubic zirconia, and real diamonds. In addition, the non-destructive <a href=\"http:\/\/www.thermoscientific.com\/en\/product\/niton-dxl-precious-metal-analyzer.html\">technology<\/a> can be used to analyze the composition of any metal-based jewelry.  And what happens to those diamonds that do not meet gem-quality standards for color, clarity, size, or shape?\u00a0 They are used principally as an abrasive, and are termed &#8220;industrial diamond.&#8221; They may not be as \u2018pretty\u2019 or \u2018brilliant\u2019 but <a href=\"http:\/\/admin.acceleratingscience.com\/mining\/industrial-diamonds-as-good-as-gemstones-or-better\/\">industrial diamonds<\/a> have proven to be more cost effective in numerous industrial processes because they cut faster and last longer than any rival material. The <a href=\"http:\/\/minerals.usgs.gov\/minerals\/pubs\/commodity\/diamond\/index.html\">U.S. Geological Survey<\/a> declares diamonds \u201cmay well be the world&#8217;s most versatile engineering material as well as its most famous gemstone.\u201d  And maybe even a <a href=\"http:\/\/www.tcm.com\/mediaroom\/video\/497401\/Gentlemen-Prefer-Blondes-Movie-Clip-Diamonds-Are-A-Girls-s-Best-Friend.html\">girl\u2019s best friend<\/a>.*  View <a href=\"http:\/\/www.gemfacts.com\/VideoTour.aspx\"><em>The Journey of your Diamond\u2019s GCAL Process<\/em><\/a><em> video.<\/em>  &nbsp;  <em>*Marilyn Monroe&#8217;s birthday: June 1st<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Did you ever wonder how those mined chains of carbon atoms that have crystallized become the stars of engagement rings, necklaces, bracelets and even crowns? They were formed in the earth over the course of thousands of years, under crushing pressures and intense heat, and yet they have emerged as showcase pieces in jewelry stores.\u00a0<\/p>\n","protected":false},"author":40,"featured_media":9072,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[225],"tags":[],"division":[],"class_list":{"0":"post-4348","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-general","8":"entry"},"_selected_authors":[1206],"_selected_reviewers":[],"acf":[],"yoast_head":"<!-- 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