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WD
Lab-Grown Sector Gears Up for Eco Audit
Six synthetic-diamond companies have signed up for apilot program aimed at creating a sustainability standard for the sector. SCS Global Services, a third-party auditing specialist,will analyze companies’ environmental, social and governance records, with thegoal...
Polished Markets Oct 15, 2019 Rapaport News
GIA CVD
GIA Spots Natural-Synthetic Hybrid Diamond
The Gemological Institute of America (GIA) has discovered asynthetic layer that improved the weight and color of a natural diamond, and haswarned that the phenomenon may be happening more often.The cushion modified brilliant, 0.64-carat...
Technology May 20, 2019 Rapaport News
Sarine
India Credit Slowdown Squeezes Sarine Profit
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...
Polished Markets May 20, 2019 Rapaport News
Almas Tower
Dubai Exchange Holds First Lab-Grown Tender
The Dubai Multi Commodities Centre (DMCC) will offer rough lab-grown diamonds at tender for the first time, as it aims to diversify the emirate’s trade. The sale, which will be run by Hong Kong-based diamondtrading firm...
Rough Markets May 12, 2019 Rapaport News
GIA
GIA Aligns Lab-Grown Reports with FTC Standards
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...
Polished Markets Mar 31, 2019 Rapaport News
Irradiated melee
GIA Spots CVD Stone in Parcel of Treated Melee
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...
Polished Markets Feb 10, 2019 Rapaport News
Scio Diamond
Adamas Acquires Synthetics Producer Scio
Nevada-based Adamas One Corp. has bought all assetsbelonging to Scio Diamond, a producer of lab-grown diamonds. Adamas will pay $3.3 million over 18 months to cover Scio’s secured debt, according to a December 11 filing with the US Securities...
Polished Markets Dec 30, 2018 Rapaport News
Gems and Gemology LPHT CVD pink 150
Pink Synthetic Displays Rare Treatment
A pink diamond recently submitted to the Central GemLaboratory (CGL) in Tokyo was found to be a chemical vapor deposition (CVD)synthetic stone, treated only with Low Pressure-High Temperature (LPHT). The marquise brilliant-cut, 0.192-carat diamond is an unusualfind, as stones...
Research Dec 17, 2018 Rapaport News
Diamond swapping
Trade ‘Blind to Diamond-Swapping Threat’
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...
Technology Aug 15, 2018 Joshua Freedman
Pink Synthetic 150
GIA Grades ‘Largest’ Lab-Grown Pink
The Gemological Institute of America (GIA) has graded a5.01-carat lab-grown diamond that, its producer claims, is the largest pinksynthetic diamond in the world. New York-based Unique Lab Grown Diamond created the stone usingchemical...
Polished Markets Jul 04, 2018 Rapaport News
GIA 150
GIA to Hold Synthetics Detection Seminars
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...
Polished Markets Jun 06, 2018 Rapaport News
WD synthetic 150
9ct. Synthetic Stone Sets ‘World Record’
WD Lab Grown Diamonds has created what it claims to be theworld’s largest known synthetic diamond made using chemical vapor deposition(CVD). The ideal-cut, round brilliant, 9.04-carat, VS2-clarity stonebroke the synthetic-diamond producer’s own previous world...
Polished Markets May 27, 2018 Rapaport News
IIDGR
Labs Refute Claims HPHT Escaping Detection
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...
Technology Apr 25, 2018 Leah Meirovich
China synthetic diamond 150
Lab Finds 3ct. Synthetic with Fake Report
A grading laboratory in China has discovered a synthetic diamond masquerading as a natural stone, complete with a forged inscription and a falsified report.The National Gemstone Testing Center (NGTC) in the city of Shenzhen received a round-brilliant, 3.1-carat diamond ring,...
Technology Apr 15, 2018 Joshua Freedman
Diamond stock photo
US Lab Creates 6ct. CVD Synthetic
WD Lab Grown Diamonds has created and sold a round, 6-caratsynthetic diamond that it claims is the first of its size and shape made usingthe chemical vapor deposition (CVD) technique. “We’re excited about our new...
Manufacturing Feb 01, 2018 Rapaport News
Chinese Grading Lab 150 120617
Lab Spots Stone with CVD Coating
A Chinese gemological laboratory has identified awell-concealed synthetic-diamond coating that bolstered the size of a small naturalstone. While the lower part of the stone was a colorless, naturaldiamond, the upper section, including the crown and...
Polished Markets Dec 07, 2017 Rapaport News
Pink GIA diamond CVD H4 defect
GIA Finds Baffling Flaw in CVD Diamond
The Gemological Institute of America (GIA) doesn’t usuallydeclare itself stumped, but a recent discovery of a flaw in a synthetic diamondthat’s almost always associated with natural stones left scientists scratchingtheir heads.Gemologists studying a round, brilliant-cut, 0.26-carat,pink laboratory-grown...
Technology Jul 02, 2017 Joshua Freedman
GIA hybrid diamond
GIA Spots Natural Diamond with CVD Blue Layer
The Gemological Institute of America (GIA) has found anatural diamond with a synthetic coating that tints it blue – and has warned thatmore such hybrids might be on the market.The 0.33-carat stone, which had been graded...
Technology May 04, 2017 Rapaport News
GIA 5ct undisclosed synthetic
GIA Spots Undisclosed 5ct. Synthetic Diamond
The Gemological Institute of America (GIA) reported the“largest” CVD synthetic diamond it has examined to date, after the stone wassubmitted for grading without notification of its lab-grown origin.The cushion modified brilliant, 5.19-carat diamond withJ-equivalent...
Technology Oct 18, 2016 Rapaport News
Scio Diamond
Synthetic Diamond Grower Scio Back to Full Output after December Water Leak
Scio Diamond, a producer of synthetic diamonds from chemical-vapordeposition (CVD), said its Greenville plant in South Carolina returned to fullproduction after a water leak in December led to a shutdown.“All growers have been repaired and are back inproduction,"...
Manufacturing Apr 13, 2016 Rapaport News
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