please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . december 2013 learn how and when to remove this template message gemesis diamond company type privately held company industry synthetic diamonds founded 1996 relaunched and renamed in 2013 after a 2012 buyout founder carter clarke jr. headquarters new york city united states key people lisa bissell president and ceo 1 2 jatin mehta company buyout purchaser 2 suraj mehta relaunch founder promoter son of jatin mehta 2 3 4 gary coleman vp of sales 5 products synthetic diamonds website https www.puregrowndiamonds.com gemesis inc. now known as pure grown diamonds 1 is a privately held company located in new york city . the corporation grows synthetic diamonds using proprietary technology . gemesis has the world s largest facilities for both the high pressure high temperature hpht and chemical vapor deposition cvd diamond production methods . using these methods gemesis has produced high quality colorless and fancy color diamonds that have been offered for sale at 20 30 % lower prices than mined natural diamonds of similar quality and from some suppliers lower prices than that . 6 gemesis is the principal producer of gem quality lab created diamonds and jewelry . the company was renamed as pure grown diamonds in june 2014 . 7 1 gemesis started marketing its diamonds by cutting and polishing them and then selling them to jewelry retailers on the wholesale market . in 2012 the company began also selling polished diamonds and diamond jewelry directly to consumers through its website . contents 1 production process 2 company history 3 marketing strategy 4 see also 5 references 6 external links production process edit in the company s hpht diamond growing method carbon in graphite form is placed in a cylindrical core . a tiny seed diamond is placed at the bottom of the cylinder . the graphite is subjected to extreme pressure 850 000 lbf in 5.9 gpa and temperature 3000 f 1600 c for four days . during the period the carbon atoms within the molten metal crystallize on top of the seed diamond . a yellow gem quality diamond up to 3 carats 600 mg in size grows inside the resolidified metal cylinder . the metal cylinder is then dissolved in mild acid and the diamond crystal is extracted . with the addition or elimination of certain impurities under controlled conditions diamonds of various color can be produced . since nitrogen is abundant in the atmosphere the hpht process is more likely to produce bright yellow diamonds than any other color although natural yellow diamonds often have higher value than white diamonds . the yellow tint occurs when approximately five out of each 100 000 carbon atoms in the diamond crystal lattice are replaced with nitrogen atoms . available in the purest type iia colorless and rare fancy yellow colors the company s diamonds have the same cut color and clarity as well as identical chemical optical and physical characteristics as the highest quality mined diamonds . company history edit the company was originally founded in 1996 by carter clarke a retired united states army brigadier general . in 2006 stephen d. lux became its chief executive officer . lux had substantial prior experience in the diamond industry . the company was bought out in early 2012 by diamond industry businessman jatin mehta and was restructured . 2 3 8 in may 2012 the news emerged that a parcel of 600 unmarked synthetic diamonds had been submitted by a buyer to the international gemological institute diamond certifying agency for evaluation without any accompanying disclosure that they were synthetic . 9 10 the dtc diamond research center issued an alert and said the undisclosed synthetics were strikingly similar in their characteristics to gemesis diamonds and a trade journal said the synthetics and gemesis diamonds had identical characteristics and had the specific gemesis fingerprint . 10 the diamonds had been grown by cvd and then treated by hpht and thus their production required both technologies . it was noted that all of the stones in the parcel were synthetics there was no mixing to hide synthetic stones among natural ones . the buyer of the parcel said the 600 diamonds were only a sampling from a collection that was four or five times larger . 10 the invoices for the diamonds were traced to a company called su raj diamonds and jewelry usa in new york that was co owned by jatin mehta the majority owner of gemesis along with a junior partner named ashok bhansali . 10 the same company was reported to house the central inventory of diamonds for gemesis itself . 10 stephen lux responded to the reports by saying gemesis can assure the industry with 100 percent certainty that it has not been involved in selling its diamonds as mined and the undisclosed diamonds referenced in the dtc and igi alerts are not gemesis diamonds . 10 jatin mehta then reportedly suggested it was possible that bhansali had misappropriated stocks held previously by the partnership or that some people who had left gemesis might have stolen our technology and are thus producing our typical gemesis characteristic goods and showed that that su raj parent company a large publicly listed company based in india had taken some steps to sever its ties with its new york subsidiary although the degree to which the separation had taken effect was unclear . 10 in december 2012 stephen lux resigned from his position as the company s ceo . lux said that internal issues at the company and distractions speculated to include the reports of undisclosed synthetic diamonds had recently made it difficult for him to focus on his goals for building the business . 11 gemesis created the world s largest lab created diamond in april 2013 broke that record in november 2013 and then broke the record again in july 2014 . the first was a 1.29 carat emerald cut the second was a princess cut at 1.78 carat 12 and the third was a 3 carat round brilliant white type iia diamond . 4 in june 2014 gemesis re branded itself as pure grown diamonds and named a new ceo lisa bissell . 7 1 marketing strategy edit the company highlights several advantages of its diamonds over those produced by natural processes lower prices alleviating concerns about the environmental impact of mining alleviating concerns related to the potential purchase of conflict or blood diamonds diamonds over 0.23 carats sold via gemesis.com are laser inscribed to identify their origin and are certified by industry authorities such as the international gemological institute . see also edit list of synthetic diamond manufacturers references edit a b c d gemesis rebrands as pure grown diamonds . nationaljeweler.com . national jeweler . a b c d bates rob june 26 2014 . diamond grower gemesis announces new president ceo . jck . retrieved august 2 2015 . a b jatin mehta new global gem quality synthetic diamond czar diamond intelligence briefs october 11 2012 . a b bates rob july 24 2014 . 3 carat synthetic colorless diamond produced largest ever grown gem . jck . retrieved august 2 2015 . contact page on pure grown diamonds official website . bates rob may 22 2012 . will synthetic diamonds cause a crisis of confidence . jck . retrieved august 2 2015 . a b gemesis inc. rebrands itself as pure grown diamonds company press release june 26 2014 . bates rob october 16 2012 . the problem with lab grown diamonds . jck . retrieved august 2 2015 . bates rob june 8 2012 . about that parcel of undisclosed synthetic diamonds . jck . retrieved august 2 2015 . a b c d e f g even zohar chaim may 30 2012 . exposing the fraudulent undisclosed synthetic diamond trail pdf . diamond intelligence briefs . retrieved august 2 2015 . bates rob december 18 2012 . gemesis ceo stephen lux resigns . jck . retrieved february 13 2014 . craft christie november 19 2013 . gemesis expands synthetic diamond offerings . jck . retrieved february 13 2014 . external links edit gemesis homepage aug 20 2014 did top defaulter divert rs 6 500 crore loan funds abroad may 22 2012 the mystery of two gemesis companies under one hat wired 11 9 03 the new diamond age wired 2 07 updata lab grown diamonds make the cut retrieved from https en.wikipedia.org w index.php title gemesis & oldid 704787900 categories synthetic diamondhidden categories articles needing additional references from december 2013all articles needing additional referencespages using infobox company with unsupported parameters navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print 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