{"id":516,"date":"2022-04-12T06:40:00","date_gmt":"2022-04-12T06:40:00","guid":{"rendered":"https:\/\/giadjlab.com\/h\/?page_id=516"},"modified":"2022-04-12T06:45:14","modified_gmt":"2022-04-12T06:45:14","slug":"gia-instruments","status":"publish","type":"page","link":"https:\/\/giadjlab.com\/h\/gia-instruments\/","title":{"rendered":"GIA Instruments"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"516\" class=\"elementor elementor-516\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5c197b2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5c197b2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f145d09\" data-id=\"f145d09\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c54f85d elementor-widget elementor-widget-text-editor\" data-id=\"c54f85d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.6 - 28-02-2022 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#818a91;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#818a91;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"font-weight: 400;\">Harness the power of knowledge with the industry-leading instruments that GIADJ uses in its grading laboratories. Representing more than 85 years of research and the combined expertise of GIADJ\u2019s laboratory, education and research divisions, these instruments will help you buy, grade and appraise gemstones and jewelry with unrivaled accuracy and confidence.<\/span><\/p><p><span style=\"font-weight: 400;\">GIADJ uses the latest equipment to ensure accurate grading, testing, and certification of diamonds and coloured gemstones.<\/span><\/p><p><strong>Fourier transform infrared spectroscopy (FTIR)<\/strong><\/p><p><span style=\"font-weight: 400;\">FTIR (Fourier Transform Infrared Spectrometer) is a vital tool in any modern gemological laboratory. An FTIR is used for testing some of the most important gems including diamonds, emeralds, corundum, alexandrite, jade, amethyst, amber and turquoise.<\/span><\/p><p><span style=\"font-weight: 400;\">FTIR is particularly important in spotting adulterated gemstones. Some treatments cannot be detected when viewed with a microscope, while FTIR can give a conclusive result.<\/span><\/p><p><span style=\"font-weight: 400;\">Fourier transform spectroscopy is a less intuitive way to obtain the spectra. Rather than shining a monochromatic beam of light at the stone, FTIR shines a beam containing many frequencies of light at once, measuring how much of the beam is absorbed by the sample. Next, the beam is modified to contain a different combination of frequencies, giving a second data point. This process is repeated many times. Afterwards, the computer takes this data and works backwards to determine what the absorption is at each wavelength.<\/span><\/p><p><strong>Uses of FTIR Spectroscopy include:<\/strong><\/p><ol><li><span style=\"font-weight: 400;\"> Distinguishing between natural &amp; synthetic (lab grown) diamonds<\/span><\/li><li><span style=\"font-weight: 400;\"> Detection of sapphires and ruby corundums have been heat treated<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between diamonds and it\u2019s imitations such as cubic zirconia, etc<\/span><\/li><li><span style=\"font-weight: 400;\"> Determining zircon state in metamict or crystalline minerals<\/span><\/li><li><span style=\"font-weight: 400;\"> Discovering if an emerald is natural, treated, or synthetic<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between natural and synthetic citrine<\/span><\/li><li><span style=\"font-weight: 400;\"> Determining if jade is polymer coated or uncoated.<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between taaffeite, serendibite and sapphirine.<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between scapolite and quartz<\/span><\/li><\/ol><p><strong>Raman Spectroscopy<\/strong><\/p><p><span style=\"font-weight: 400;\">Raman spectroscopy is used to identify unknown materials.<\/span><\/p><p><span style=\"font-weight: 400;\">As early as the beginning of the 2000s, Raman Spectroscopy has become standard procedure in reputable labs. Raman spectrometry is used to identify gem materials, inclusions and even fillers in a non destructive manner. Raman spectra can also be obtained on mounted gems, thus the technique plays a large role in accurately testing gems which are mounted on jewellery. It also plays a vital role in detecting a wide array of materials such as HPHT treated diamonds, treated jade, and more.<\/span><\/p><p><span style=\"font-weight: 400;\">Using raman spectroscopy, gemologists can identify unknown materials from their unique Raman spectral fingerprints and compare these with known libraries of spectra.<\/span><\/p><p><span style=\"font-weight: 400;\">Ideally, Raman instrumentation is used with high spectral resolution across the whole Raman range. This can identify, differentiate and investigate a wider range of materials.<\/span><\/p><p><span style=\"font-weight: 400;\">Differentiation of materials<\/span><\/p><p><span style=\"font-weight: 400;\">Gemologists determine if materials are the same or different by comparing their spectra. A high spectral resolution system, such as a Raman Spectrometer, enables us to distinguish even very similar crystal forms (polymorphic) of the same chemical.<\/span><\/p><p><strong>Some of the uses of Raman Spectroscopy include:<\/strong><\/p><ol><li><span style=\"font-weight: 400;\"> Distinguishing between a diamond and it\u2019s imitations<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between amethyst and iolite<\/span><\/li><li><span style=\"font-weight: 400;\"> Determination of enstatite<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between grossular and spessartite garnet varieties<\/span><\/li><li><span style=\"font-weight: 400;\"> Distinguishing between polymer coated or uncoated jade<\/span><\/li><li><span style=\"font-weight: 400;\"> Identification of zircon in its metamict state or crystalline state<\/span><\/li><\/ol><p><strong>Ultraviolet\u2013Visible spectroscopy\u00a0<\/strong><\/p><p><span style=\"font-weight: 400;\">(UV-Vis or UV\/Vis) refers to the absorption or reflectance spectroscopy of the ultraviolet-visible spectral region. This technique uses light in the visible and adjacent (near-UV and near-infrared [NIR]) ranges. The absorption or reflectance of the visible range directly affects the perceived colour of the chemicals involved. In this region of the electromagnetic spectrum, molecules undergo electronic transitions. This technique is complementary to fluorescence spectroscopy, in that fluorescence deals with transitions from the excited state to the ground state, whereas absorption measures transitions from the ground state to the excited state. Together, the two methods are used to accurately grade and determine the perceived colour of diamonds and other coloured gemstones, cobalt presence in spinels, and more.<\/span><\/p><p><span style=\"font-weight: 400;\">The visible absorption spectra are a direct representation of the constituents (impurities, etc) that cause colour and this property is used to come to reliable conclusions. UV \/ VIS spectroscopy plays an important role in the distinguishing varieties of spinels, to find out if they are cobalt spinel, iron spinel or chromium component spinel from its spectra. This technique also helps in finding out the state of sapphire corundums in metamorphic or magmatic states, and much more.<\/span><\/p><p><strong>Packaging &amp; Sealing<\/strong><\/p><p><span style=\"font-weight: 400;\">GIADJ introduces the taylor made packaging &amp; sealing Solution for Colour Stones, Diamond &amp; Diamond Jewellery. Packaging has become most essential part of sales in this world.<\/span><\/p><p><span style=\"font-weight: 400;\">GIADJ Certificate Full report, Mini report and Memo (Cards) can be issued on all gemstones whether they are loose or mounted on jewellery.<\/span><\/p><p><span style=\"font-weight: 400;\">Contact GIADJ for certification of both loose and mounted gems.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Harness the power of knowledge with the industry-leading instruments that GIADJ uses in its grading laboratories. Representing more than 85 years of research and the combined expertise of GIADJ\u2019s laboratory, education and research divisions, these instruments will help you buy, grade and appraise gemstones and jewelry with unrivaled accuracy and confidence. GIADJ uses the latest [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-516","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/pages\/516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/comments?post=516"}],"version-history":[{"count":7,"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/pages\/516\/revisions"}],"predecessor-version":[{"id":530,"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/pages\/516\/revisions\/530"}],"wp:attachment":[{"href":"https:\/\/giadjlab.com\/h\/wp-json\/wp\/v2\/media?parent=516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}