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Company type | Privately held company |
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Industry | Synthetic diamonds |
Founded | 1996 (relaunched in 2013 after a 2012 buyout, renamed in 2014) |
Founder | Carter Clarke Jr. |
Headquarters | , |
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.gemesis.com/ [ dead link ] |
Gemesis Inc. was a privately held company located in New York City. The company grew synthetic diamonds using proprietary technology.
Gemesis had 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 produced high-quality colorless and fancy color diamonds that were offered for sale at 20–30% lower prices than mined natural diamonds of similar quality (and, from some suppliers, lower prices than that). [6] By about 2010, Gemesis was the principal producer of gem quality lab created diamonds and jewelry.
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.
The company was founded by Carter Clarke Jr., a retired United States Army brigadier general and son of Carter W. Clarke, beginning as a 30,000-square-foot factory, outside Sarasota, Florida. [7] It was purchased in early 2012 by diamond industry businessman Jatin Mehta. After allegations of impropriety among some of the company's principals arose in 2012, the company was restructured and refounded in 2013 with Mehta's son Suraj Mehta at the helm and with part or all of the company assets transferred to a new company that was still known as "Gemesis". A new CEO was appointed [8] and the company was renamed to Pure Grown Diamonds in June 2014. [1] [9] The new company became a diamond reseller that does not manufacture the gems themselves.
There are two well established methods of synthetic diamond creation – CVD and HPHT. Gemesis used elements of both – growing diamonds by HPHT after creating smaller ones by CVD. [10] [11] This contrasts with the method used by its primary diamond gemstone competitor of the 2000–2010 era, Apollo Diamond, which its grew gemstones using only CVD. [12]
In the HPHT diamond-growing method that was used by Gemesis, carbon, in graphite form, was placed in a cylindrical "core". A tiny CVD seed diamond was placed at the bottom of the cylinder. The graphite was then subjected to extreme pressure, 850,000 lbf/in² (5.9 GPa) and temperature, 3,000 °F (1,650 °C) for four days. As the diamond was grown, the carbon atoms within the molten metal would crystallize on top of the seed diamond. In Gemesis' process, a yellow gem-quality diamond up to 3 carats (600 mg) in size would grow inside the resolidified metal cylinder. The metal cylinder would then be dissolved in mild acid and the diamond crystal would be extracted.
With the addition or elimination of certain impurities under controlled conditions, diamonds of various color types could be produced. Since nitrogen is abundant in the atmosphere, the HPHT process was 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 basically identical chemical, optical and physical characteristics as the highest-quality mined diamonds and can also have the same type of cut, color and clarity for gemstone purposes.
Gemesis was 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 announced in November 2010 that it planned to begin offering gemstone-quality colorless diamonds for sale on the internet, and ultimately launched its website to do so in March 2012. [13]
The business was not profitable, partly due to the high cost of developing the diamond production process to a point where sufficient production volume was feasible, and the original investors basically lost their entire investments. [14] The company was heading toward bankruptcy in 2010 when diamond industry businessman Jatin Mehta stepped in with an investment of $US8.4M in exchange for a controlling interest in the firm. [15] Mehta reportedly bought out the remaining shareholders in early 2012 and restructured the company, initially renaming it from Gemesis Corporation to Gemesis Diamond Company. [15] [2] [3] [14] Mehta also moved the company's diamond production operations from Florida to Malaysia and made moves designed to legally separate and protect the company's intellectual property. [15] The company restructuring was sufficiently confusing that the well-known industry analyst Chaim Even-Zohar published a report in May 2012 entitled "The Mystery Of Two Gemesis Companies Under One Hat". [15]
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 (IGI) diamond certifying agency for evaluation, without any accompanying disclosure that they were synthetic. [10] [11] 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". [11] 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. [11]
The IGI alleged that impurities and flaws in the synthetic stones had been intentionally introduced in order to create the appearance that they were of natural origin, concluding that the stones had been "created to defraud". [15]
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. [11] The same company was reported to house the central inventory of diamonds for Gemesis itself. [11] 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." [11] 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 the Su-Raj parent company (a large publicly listed company based in India and also known as Winsome Diamonds or Jewellery USA [15] [16] ) 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). [11]
In December 2012, Stephen Lux reportedly 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. [17] However, Lux later sued the company, alleging that he had not actually resigned but rather had been terminated, and claiming wrongful termination of his employment. [15] [18] Lux also alleged that the company had not actually been purchased by Jatin Mehta directly, but instead had been sold to a company named Power Capital Ventures Ltd (PCV) in 2012. [15]
Disputes over the incident lasted until at least 2017, when Su-Raj filed a complaint with the Supreme Court of New York against its broker, Sterling Diamonds, Inc. [19]
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, [20] and the third was a 3 carat round brilliant white Type IIa diamond. [4]
In June 2014, Gemesis named a new CEO, Lisa Bissell, and re-branded itself as "Pure Grown Diamonds". [9] [8] [1] At the time, Bissell said "The new name reinforces our commitment to disclosure and transparency." [8] Suraj Mehta said he had been looking for a person to fill the role after re-founding the company in 2013. [8]
In the wake of the company's restructuring, Jeweller magazine reported that "Gemesis' rebranding and its strong emphasis on transparency could be perceived as an effort to dissociate from previous speculation and confusion." It referred to the May 2012 discovery of undisclosed synthetic diamonds and said that past reports from the company had "caused confusion regarding the status of the company's ownership and operations". [18] The company's 2014 press releases referred to the company as having been founded in 2013, although Gemesis had been in existence since 1996. [18]
The company highlighted several advantages of its diamonds over those produced by natural processes:
Diamonds over 0.23 carats sold via Gemesis.com were laser inscribed to identify their origin and were certified by industry authorities such as the International Gemological Institute.
Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth.
Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds have many inclusions, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.
A gemstone is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments. Certain rocks and occasionally organic materials that are not minerals may also be used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some softer minerals such as brazilianite may be used in jewelry because of their color or luster or other physical properties that have aesthetic value. However, generally speaking, soft minerals are not typically used as gemstones by virtue of their brittleness and lack of durability.
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon. The name sapphire is derived from the Latin word sapphirus, itself from the Greek word sappheiros (σάπφειρος), which referred to lapis lazuli. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors. Red corundum stones also occur, but are called rubies rather than sapphires. Pink-colored corundum may be classified either as ruby or sapphire depending on locale. Commonly, natural sapphires are cut and polished into gemstones and worn in jewelry. They also may be created synthetically in laboratories for industrial or decorative purposes in large crystal boules. Because of the remarkable hardness of sapphires – 9 on the Mohs scale (the third hardest mineral, after diamond at 10 and moissanite at 9.5) – sapphires are also used in some non-ornamental applications, such as infrared optical components, high-durability windows, wristwatch crystals and movement bearings, and very thin electronic wafers, which are used as the insulating substrates of special-purpose solid-state electronics such as integrated circuits and GaN-based blue LEDs. Sapphire is the birthstone for September and the gem of the 45th anniversary. A sapphire jubilee occurs after 65 years.
Lab-grown diamond is diamond that is produced in a controlled technological process. Unlike diamond simulants, synthetic diamonds are composed of the same material as naturally formed diamonds—pure carbon crystallized in an isotropic 3D form—and share identical chemical and physical properties. As of 2023 the heaviest synthetic diamond ever made weighs 30.18 ct, and the heaviest natural diamond ever found weighs 3167 ct.
Diamond enhancements are specific treatments, performed on natural diamonds, which are designed to improve the visual gemological characteristics of the diamond in one or more ways. These include clarity treatments such as laser drilling to remove black carbon inclusions, fracture filling to make small internal cracks less visible, color irradiation and annealing treatments to make yellow and brown diamonds a vibrant fancy color such as vivid yellow, blue, or pink.
A diamond simulant, diamond imitation or imitation diamond is an object or material with gemological characteristics similar to those of a diamond. Simulants are distinct from synthetic diamonds, which are actual diamonds exhibiting the same material properties as natural diamonds. Enhanced diamonds are also excluded from this definition. A diamond simulant may be artificial, natural, or in some cases a combination thereof. While their material properties depart markedly from those of diamond, simulants have certain desired characteristics—such as dispersion and hardness—which lend themselves to imitation. Trained gemologists with appropriate equipment are able to distinguish natural and synthetic diamonds from all diamond simulants, primarily by visual inspection.
The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality. The institute does so through research, gem identification, diamond grading services, and a variety of educational programs. Through its library and subject experts, GIA acts as a resource of gem and jewelry information for the trade, the public and media outlets.
Diamonds were largely inaccessible to investors until the recent advent of regulated commodities, due to a lack of price discovery and transparency. The characteristics of individual diamonds, especially the carat weight, color and clarity, have significant impact on values, but transactions were always private. With the standardized commodity as an underlying asset, several market traded financial instruments have been announced.
Diamond is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times.
Gemmological Institute of India is a gemmology training school in Mumbai, India.
Brown diamonds are the most common color variety of natural diamonds. In most mines, brown diamonds account for 15% of production. The brown color makes them less attractive to some people as gemstones, and most are used for industrial purposes. However, improved marketing programs, especially in Australia and the United States, have resulted in brown diamonds becoming valued as gemstones and even referred to as chocolate diamonds.
Scio Diamond Technology Corporation was a synthetic diamond manufacturer that produced near flawless single-crystal diamonds for gemstone and industrial applications, in Greenville, South Carolina. The company produced chemical vapor deposition (CVD) gem-sized synthetic diamond crystals using processes pioneered by Apollo Diamond, and had acquired Apollo Diamond's technology and assets including several US patents on the processes.
WD Lab Grown Diamonds was a market leader in Chemical Vapor Deposition (CVD) diamonds, headquartered in the Washington, D.C. area. Founded in 2008, WD produces lab-grown diamonds for distribution under the brands, in addition to creating diamonds for high-tech Advanced Materials applications. The company relaunched as WD Advanced Materials, LLC in 2023.
A recycled diamond is a diamond which had a prior use and has re-entered the diamond supply chain.
Black, Starr & Frost, previously known as Marquand and Co, is an American jewelry company. Founded in 1810 as Marquand and Co., the company is the oldest continuously operating jewelry firm in the United States. The company has acted as a retailer, rather than manufacturer, for most of its history.
A red diamond is a diamond which displays red color and exhibits the same mineral properties as colorless diamonds. Red diamonds are commonly known as the most expensive and the rarest diamond color in the world, even more so than pink or blue diamonds, as very few red diamonds have been found. Red diamonds, just like pink diamonds, are greatly debated as to the source of their color, but the gemological community most commonly attributes both colors to gliding atoms in the diamond's structure as it undergoes enormous pressure during its formation. Red diamonds are among the 12 colors of fancy color diamonds, and have the most expensive price per carat. They will typically run in the hundreds of thousands of dollars per carat range. Since they are the rarest color, it is difficult to find them in large sizes, and they are mostly found in sizes less than 1 carat. Red diamonds only exist with one color intensity, Fancy, although their clarities can range from Flawless to Included, just like white diamonds. The largest and most flawless red diamond is the 5.11 carat Fancy Red Moussaieff Red Diamond, which has internally flawless clarity.
ALTR Created Diamonds is a brand of lab-grown diamonds created by R.A. Riam Group.
Carroll Chatham (1914–1983) was an American chemist who developed the flux method for synthesizing emeralds. He was the first person to develop a method for creating man-made emeralds that was able to make them commercially available. He founded the jewelry company Chatham which is still selling Chatham emeralds to this day.