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GIA Unveils New Lab-Grown Reports
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The Gemological Institute of America (GIA) has launched its new grading reports for lab-grown diamonds, offering an updated look and format.The new documents, branded “LGDR by GIA,” come in digital-only form and use specific...
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Polished Markets
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Oct 15, 2020
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Rapaport News
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IGI Grades Record Black Lab-Grown Diamond
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The International Gemological Institute (IGI) recently graded a 116-carat, black synthetic diamond that ranks as the largest lab-grown diamond of its color.The 115.65-carat, type IIb stone was produced by UK-based Meylor Global using High...
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Rough Markets
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Oct 01, 2020
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Rapaport News
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Lab-Grown Diamond Morphs from Yellow to Pink
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The International Gemological Institute (IGI) recently graded a 10.06-carat, fancy-vivid-pink lab-grown diamond that had previously been submitted as a fancy-intense yellow.The stone, which IGI had already fully assessed and graded in its original state,...
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Polished Markets
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Sep 02, 2020
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Rapaport News
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GIA Now Able to Screen Fancy-Shaped Melee
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The Gemological Institute of America (GIA) has expanded its melee-screening capabilities, with the organization now able to test whether parcels of fancy-shaped diamonds contain lab-grown or treated stones.The melee-analysis service separates natural diamonds from...
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Polished Markets
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Aug 24, 2020
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Rapaport News
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GSI to Flag Treatments in Lab-Grown Reports
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Gemological Science International (GSI) has launched a new grading report for synthetic diamonds that states whether a stone has been through post-growth treatment, claiming to be the first major laboratory to offer this.The LGX Complete...
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Rough Markets
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Mar 15, 2020
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Rapaport News
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Lab Spots New Method for Masking Synthetics
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Gemological Science International (GSI) is urging extra diligence after receiving a lab-grown diamond bearing a treatment generally only found in natural stones.“Diamond-growing technology continues to improve and growers are trying to mimic natural diamonds in every possible...
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Polished Markets
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Feb 25, 2020
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Rapaport News
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GIA Suspends Sealing Service
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The Gemological Institute of America (GIA) has halted its diamond-sealing service after fraudsters tampered with packets and replaced stones with treated ones. A small number of packages were “compromised” after leaving the GIA...
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Polished Markets
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Jan 19, 2020
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Rapaport News
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Undisclosed Green Synthetics Raise GIA Eyebrows
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Twenty-five undisclosed lab-grown diamonds have turned up atthe Gemological Institute of America (GIA) — including several with a raregreenish color. The GIA’s lab in Carlsbad, California, recently received thestones — weighing from 0.46 to 0.52 carats — for...
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Technology
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May 26, 2019
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Rapaport News
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India Credit Slowdown Squeezes Sarine Profit
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Sarine Technologies posted a loss in the first quarter ascredit problems in the Indian manufacturing sector led to softened demand forits equipment. The diamond-technology company reported a net loss of $1.4million, versus a profit of $3.1 million for...
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Polished Markets
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May 20, 2019
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Rapaport News
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GIA Aligns Lab-Grown Reports with FTC Standards
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The Gemological Institute of America (GIA) has updated thelanguage in its lab-grown-diamond certificates to conform to the recent Federal Trade Commission (FTC) guidelines.The grading lab will no longer use the term synthetic whenreferring to diamonds created...
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Polished Markets
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Mar 31, 2019
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Rapaport News
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CIBJO Calls for Synthetics Treatment Disclosure
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The World Jewellery Confederation (CIBJO) has specified theneed to disclose treatments when it comes to both natural and lab-grown diamonds. Sellers must make the disclosure clearly, both at the time of sale and before, the...
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Polished Markets
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Mar 17, 2019
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Rapaport News
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GIA Spots CVD Stone in Parcel of Treated Melee
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In a rare case, the Gemological Institute of America (GIA)has discovered an irradiated chemical vapor deposition (CVD) diamond in a batch of natural melee aclient had submitted for testing. The GIA’s Tokyo laboratory found the 0.007-carat, irradiatedgreen-blue...
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Polished Markets
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Feb 10, 2019
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Rapaport News
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GIA Sheds Light on De Beers’ Synthetics
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Two white lab-grown diamonds from De Beers’ Lightbox brandhave G color and VS clarity, the Gemological Institute of America (GIA) saidafter examining the stones. Lightbox doesn’t offer grading reports for its products, andhadn’t previously...
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Polished Markets
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Feb 07, 2019
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Joshua Freedman
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‘Lab-Grown’ Diamond Turns Out to Be Natural
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A client of the Gemological Institute of America (GIA)wrongly submitted a natural diamond as a lab-grown stone, the organizationsaid.The GIA’s Carlsbad laboratory recently received the round brilliant,2.23-carat, D-color diamond, which the customer had sent in for asynthetic-diamond...
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Polished Markets
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Feb 06, 2019
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Rapaport News
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Trade ‘Blind to Diamond-Swapping Threat’
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Diamond dealers are failing to protect themselves against stone-swapping,and are instead waiting until an expensive loss occurs before taking action, equipmentsuppliers have warned. The switching of natural diamonds with synthetics or otherlower-value goods is a common...
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Technology
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Aug 15, 2018
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Joshua Freedman
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GIA to Hold Synthetics Detection Seminars
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The Gemological Institute of America (GIA) will offer aseries of seminars this year on advanced detection of lab-grown stones. The courses, which will be taught by GIA research scientistsand classroom instructors, will combine lectures with practical...
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Polished Markets
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Jun 06, 2018
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Rapaport News
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GIA Spots Treatment Fraud with 6ct. Polished
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The Gemological Institute of America (GIA) has uncovered atreated diamond carrying a false inscription that fraudsters had apparentlycreated to make the stone appear untreated. Swindlers appear to have carefully selected a grading reportfor an untreated diamond...
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Polished Markets
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May 30, 2018
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Rapaport News
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Labs Refute Claims HPHT Escaping Detection
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Major gemological laboratories have rebuffed claims that detection machines are failing to spot synthetic diamonds that have undergone irradiation.In a trade alert last week, Diamond Services argued that the treatment, generally used...
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Technology
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Apr 25, 2018
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Leah Meirovich
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GIA Finds Synthetic Diamond with Forged Inscription
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Fraudsters forged a Gemological Institute of America (GIA)inscription on a synthetic diamond to make it appear that the stone was thetrue bearer of a natural-diamond grading report, the institute said.The engraving on the polished diamond’s girdle contained a genuineGIA report...
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Technology
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Nov 13, 2017
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Rapaport News
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De Beers to Launch Synthetics Checker
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The International Institute of Diamond Grading &Research (IIDGR) will unveil its latest synthetics detection equipment at theHong Kong Jewellery & Gem Fair this month, the De Beers subsidiary reported.The new PhosView machine allows...
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Technology
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Sep 01, 2016
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Rapaport News
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