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      HPHT is a diamond color enhancement process performed only on rare Type 2a diamonds with the highest structural integrity and clarity grades. The process mimics the same geological conditions the earth uses to uncover colorless and white diamonds.

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      HPHT Diamonds For Sale. HPHT ("High Pressure, High Temperature") is a diamond enhancement procedure that is commonly used around the world to enhance a natural diamond's color by submitting it through high amounts of pressure and high temperatures. Dianer Diamonds Ltd. implements this treatment on type IIa natural stones.

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      May 30, 2014· Manufacturers and distributors of High Pressure High Temperature (HPHT) processed natural diamonds are claiming an opportunity for their small, specialized niche. Not to be confused with treatments or synthetics, advocates of HPHT-processed natural diamonds are

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      Large companies applying the HPHT treatment to diamonds greatly support the research done by the EGL USA labs and sell their products with full disclosure. In most cases retailers will sell their treated goods with disclosure. At the EGL USA labs all diamonds that test positive for HPHT

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      How are HPHT diamonds made? Short for “high-pressure high-temperature”, HPHT diamonds are referred to as such because of the laboratory process used to create them. Carbon is the element all diamonds are composed of. As such, the diamond creation process first starts with a sample of carbon.

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      Jul 25, 2016· HPHT-grown synthetic diamonds are now available in the gem and jewelry marketplace in a wide range of colors, as evident from this attractive synthetic yellow diamond jewelry (1.00 to 1.25 cts) provided by Gemesis Corp. and these loose synthetic diamonds (each under 1 ct) from Lucent Diamonds and Chatham Created Gems.

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      How are HPHT diamonds made? Short for “high-pressure high-temperature”, HPHT diamonds are referred to as such because of the laboratory process used to create them. Carbon is the element all diamonds are composed of. As such, the diamond creation process first starts with a sample of carbon.

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      For more than 20 years we've been manufacturers and pioneers in creating some of the most amazing man-made diamonds. Renaissance Diamonds are not some cheap imitation or synthetic diamond. Ours are identical in brilliance, sparkle, fire and scintillation the only differences are they come from above the earth and of course, their cost.

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      Synthetic diamond production is relatively recent and the company continues to improve the quality and color of the diamonds it produces using the high pressure, high temperature (HPHT) process with alkaline carbonate-fluid melts. The Tairus synthetic diamonds are primarily Fancy Yellow colors including Vivid Yellow, Orange, and Cognac.

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      Laboratory-Grown Diamond Grading Report. Full 4Cs assessment with general color and clarity descriptions. For loose, colorless to near-colorless laboratory-grown diamonds, 0.15 carats or more.

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      Jul 25, 2016· HPHT-grown synthetic diamonds are now available in the gem and jewelry marketplace in a wide range of colors, as evident from this attractive synthetic yellow diamond jewelry (1.00 to 1.25 cts) provided by Gemesis Corp. and these loose synthetic diamonds (each under 1 ct) from Lucent Diamonds and Chatham Created Gems.

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      Currently, two methods exist for the creation of a diamond in the laboratory setting. How High-Pressure High-Temperature (HPHT) Diamonds are Made. Synthetic diamonds created by the HPHT method is the closest process that mimics Earth’s natural diamond-creation process.

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      Once crafted, Pure Grown Diamonds display extraordinary brilliance, fire and sparkle. Pure Grown Diamonds are Type IIa. Beyond the 4 C’s, every diamond is categorized by type, based on the presence or absence of impurities at the atomic level. The purest and rarest diamond, the Type IIa, contains no nitrogen or any other trace element.

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      Currently, two methods exist for the creation of a diamond in the laboratory setting. How High-Pressure High-Temperature (HPHT) Diamonds are Made. Synthetic diamonds created by the HPHT method is the closest process that mimics Earth’s natural diamond-creation process.

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      Once crafted, Pure Grown Diamonds display extraordinary brilliance, fire and sparkle. Pure Grown Diamonds are Type IIa. Beyond the 4 C’s, every diamond is categorized by type, based on the presence or absence of impurities at the atomic level. The purest and rarest diamond, the Type IIa, contains no nitrogen or any other trace element.

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      Synthetic diamond is the hardest known material, where hardness is defined as resistance to indentation. The hardness of synthetic diamond depends on its purity, crystalline perfection and orientation: hardness is higher for flawless, pure crystals oriented to the direction (along the longest diagonal of the cubic diamond lattice).

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      Gemesis Inc., now known as Pure Grown Diamonds, 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

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