{"id":499,"date":"2018-10-14T09:25:40","date_gmt":"2018-10-14T13:25:40","guid":{"rendered":"http:\/\/www.ndrdiamond.com\/blog\/?p=499"},"modified":"2026-05-15T05:51:27","modified_gmt":"2026-05-15T09:51:27","slug":"gia-certified-diamond","status":"publish","type":"post","link":"https:\/\/www.ndrdiamond.com\/blog\/gia-certified-diamond\/","title":{"rendered":"What is a GIA Certified Diamond?"},"content":{"rendered":"

For as long as I can remember I have been recommending to any diamond buyer that they buy a diamond with a \u00a0GIA “certificate” or “diamond grading report”. \u00a0It has recently occurred to me that, while this recommendation my be second nature to someone like me who is involved in the whole diamond trade, the idea of a GIA “certificate” is a concept that is not familiar to the consumer diamond buyer.<\/p>\n

The Gemological Institute of America (GIA) is the preeminent authority in determining the quality of a specific diamond. The GIA is an nonprofit educational institute which operates diamond grading laboratories in multiple locations around the world.<\/p>\n

Although there are other laboratories that issue diamond grading reports, there are no other diamond grading laboratories or companies that have the same significance with regard to accuracy and respectability. \u00a0 In fact, other diamond grading laboratories have been the subject of a major class action lawsuit among diamond consumers who alleged that they were defrauded when they purchased diamonds with a certificate that was, in fact, very inaccurate with regard to GIA quality assessment standards.<\/p>\n

A GIA “Certificate” or “Grading Report” is a report issued by the Gemological Institute of America with regard to the specifications of a specific diamond. The report represents an\u00a0 independent and professional assessment of a diamond’s specifications with regard to the actual carat weight, color and clarity of a specific diamond.<\/p>\n

The information within the report provides specifications about proportions and other things that provide insight about the “Cut” of a diamond. The GIA has only recently begun issuing a grade with regard to the \u201cCut\u201d of the diamond.*\u00a0 Since 2005, the GIA has assigned a \u201cCut\u201d grade only on round diamonds. Fancy shape diamonds, meaning all diamonds that are not a round shape, are not graded with regard to cut.<\/p>\n

\"\"<\/a>The GIA report records many aspects of a diamond’s specifications and scientific measurements which serve as “identification markers” of the diamond. \u00a0These \u201cidentification markers\u201d identify and differentiate the subject diamond from all other diamonds. For this reason, the GIA report is a record of one specific diamond and thus becomes the \u201cCertificate\u201d for the diamond.<\/p>\n

A \u201cGIA certified diamond\u201d refers to any diamond that has been submitted to a GIA laboratory and has been issued a grading report. \u00a0This report is in one of three formats. \u00a0It can be a full report which contains a diagram and plot of the diamond. \u00a0It may be a \u201cDossier\u201d report which is smaller in size and is usually issued on diamonds which weigh less than 0.99 carats. \u00a0A newer report format is referred to as an \u201cE-Report\u201d as it refers to a diamond for which an electronic report is issued without a paper report. \u00a0This report, no matter which format, is referred to, interchangeably, as the \u201cGIA Certificate\u201d or \u201cGIA grading report\u201d.<\/p>\n

A GIA report is not a statement of valuation. Diamonds of a similar GIA grade are not identical and are not necessarily of equal value. \u00a0There are many factors that determine the overall beauty and valuation of a diamond. For this reason, there can be significant valuation differences between diamonds of the same GIA grade.<\/p>\n

With regard to diamonds that are not certified by the GIA, it is wrong to believe that such diamonds are less expensive than similarly GIA graded diamonds. \u00a0It is my professional belief that most diamonds that are sold without a GIA grading report are sold with inaccurate and exaggerated color and\/or clarity grades at higher prices than would otherwise be realized with a GIA grading report.<\/p>\n

An additional protection inherent in GIA certification is that the GIA will only offer a diamond grading report on a natural diamond. This eliminates the concern that the diamond may be a laboratory created \u201cdiamond\u201d of significantly lesser value. \u00a0The GIA grading report will also note if the diamond has been subjected to any treatment or enhancement processes which, in most cases, will effect valuation.<\/p>\n

Most diamonds that are sold at mass retailers or typical mall locations are not certified by the GIA. \u00a0The reason for this is that the diamonds sold in such stores are usually inferior in quality than that which is typically certified by the GIA. \u00a0Also, small diamonds used in jewelry are almost never certified by the GIA .<\/p>\n

As I stated at the outset, I recommend that a diamond engagement ring buyer should purchase a diamond that has been certified by the GIA. The GIA diamond grading report provides essential information about the diamond. \u00a0A GIA certificate protects the buyer from \u201cpuffery\u201d or exaggerated claims made by unscrupulous salespeople. \u00a0It protects against synthetic or lab grown diamond imitations as well as non-disclosed enhancements. The GIA report also serves as documentation and identification of the diamond that is useful to its owner with regard to insurance and other matters of ownership.<\/p>\n

*\u00a0 *\u00a0 *\u00a0 *\u00a0 *\u00a0 *<\/p>\n

For more information on the subject of the new “CUT’ grade, see:\u00a0 \u00a0“GIA’s new round brilliant cut grading system sheds light on diamond’s overall appearance”<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

For as long as I can remember I have been recommending to any diamond buyer that they buy a diamond with a \u00a0GIA “certificate” or “diamond grading report”. \u00a0It has recently occurred to me that, while this recommendation my be second nature to someone like me who is involved in the whole diamond trade, the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[7],"tags":[],"yoast_head":"\nWhat is a GIA Certified Diamond? – N D Reiff Company - Blog<\/title>\n<meta name=\"description\" content=\"Issued by the Gemological Institute of America, a GIA certificate is a record of the carat weight, color and clarity and other specifications of a diamond.\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ndrdiamond.com\/blog\/gia-certified-diamond\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a GIA Certified Diamond? 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What is the difference between grading labs?","date":"March 13, 2015","format":false,"excerpt":"When buying a diamond a diamond grading report is essential. The grading report or \u201cCertificate\u201d represents an independent analysis of the quality of a diamond. Without such a grading report, one is at the mercy of the seller and assumes that the seller is accurately describing the quality. In many\u2026","rel":"","context":"Similar post","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":127,"url":"https:\/\/www.ndrdiamond.com\/blog\/inconsistencies-on-gia-grading-certificates\/","url_meta":{"origin":499,"position":1},"title":"Inconsistencies on GIA Grading Certificates","date":"May 14, 2015","format":false,"excerpt":"Inconsistency on GIA Grading Certificates. To diamond dealers and everyone associated with the diamond and fine jewelry trade, there is perhaps no thing more disturbing in recent times than the extreme inconsistency in GIA diamond grading reports. While there has always been some level of inconsistency in diamond grading itself,\u2026","rel":"","context":"Similar post","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6,"url":"https:\/\/www.ndrdiamond.com\/blog\/buying-a-gia-fancy-shape-diamond-buyer-beware\/","url_meta":{"origin":499,"position":2},"title":"Buying a GIA Fancy Shape Diamond \u2013 BUYER BEWARE.","date":"September 17, 2015","format":false,"excerpt":"BUYING A GIA FANCY SHAPE DIAMOND \u2013 BUYER BEWARE. Buying a Fancy Shape diamond - the term used for an Oval, Cushion Cut, Emerald Cut, Princess Cut, and all other non-Round diamond shapes - based solely on the GIA grading report is\u00a0not well-advised. \u00a0 Though there is much information contained\u2026","rel":"","context":"In "Diamond"","img":{"alt_text":"","src":"https:\/\/i1.wp.com\/www.ndrdiamond.com\/blog\/wp-content\/uploads\/2015\/09\/aa3.06-Ivs2-CUSHION-300x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":34,"url":"https:\/\/www.ndrdiamond.com\/blog\/all-about-diamond-grading-certificates\/","url_meta":{"origin":499,"position":3},"title":"All about diamond grading certificates.","date":"March 13, 2015","format":false,"excerpt":"All about diamond grading certificates.. When buying a diamond I urge you to buy a diamond with a diamond grading report or diamond grading certificate. These mean the same thing - and are used interchangeably. In a different post I have discussed the differences between a diamond grading report issued\u2026","rel":"","context":"In "Diamond"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":80,"url":"https:\/\/www.ndrdiamond.com\/blog\/gia-diamond-grading-simplified\/","url_meta":{"origin":499,"position":4},"title":"GIA Diamond Grading - SIMPLIFIED","date":"June 9, 2015","format":false,"excerpt":"GIA Diamond Grading - SIMPLIFIED. As I have stated in my previous posts, it is my opinion that the GIA grading system is ridiculous. This opinion is based on the fact that there are nearly 200 possible grade combinations of color and clarity. \u00a0To the human eye, under \"normal life\"\u2026","rel":"","context":"In \"4Cs\"","img":{"alt_text":"NDR DiamondGrading Chart REV2","src":"https:\/\/i1.wp.com\/www.ndrdiamond.com\/blog\/wp-content\/uploads\/2015\/06\/NDR-DiamondGrading-Chart-REV2.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":752,"url":"https:\/\/www.ndrdiamond.com\/blog\/si1-or-si2-graded-diamonds-the-right-choice-or-a-bad-choice-when-buying-a-diamond\/","url_meta":{"origin":499,"position":5},"title":"SI1 or SI2 Graded Diamonds - The RIGHT choice or a BAD choice when buying a Diamond?","date":"February 14, 2025","format":false,"excerpt":"For as long as I can remember in my 45+ years in the diamond and jewelry business, the most sought after diamonds in terms of GIA color and clarity grading has been \"SI\" (Slightly Included) quality diamonds. The reason for this is simply that a \"nice\" \u201cSI1\u201d or \u201cSI2\u201d clarity\u2026","rel":"","context":"In "Diamond"","img":{"alt_text":"","src":"https:\/\/i1.wp.com\/www.ndrdiamond.com\/blog\/wp-content\/uploads\/2025\/02\/2.00-ISI2-16014.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/posts\/499"}],"collection":[{"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/comments?post=499"}],"version-history":[{"count":15,"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/posts\/499\/revisions"}],"predecessor-version":[{"id":587,"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/posts\/499\/revisions\/587"}],"wp:attachment":[{"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/media?parent=499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/categories?post=499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ndrdiamond.com\/blog\/wp-json\/wp\/v2\/tags?post=499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}