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    What is the Difference between CVD diamonds and HPHT diamonds? Friday, September 30, 2016 3:20:07 AM America/New_York. and an HPHT diamond, from Mother Nature? CVD diamonds are simply lab created synthetic diamonds. The initials stand for "Controlled Vapor Diffusion." This is a process done in a controlled laboratory which creates the exact

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    Wholesale CVD Diamonds . The History of CVD Diamonds Do you know when the first commercially available Man-Made Diamond was produced? The first of the man-made Diamonds, also known as Synthetic Diamond or CVD Diamond, was made in 1956 by General Electric with the High Pressure, High Temperature (HPHT) process.

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    CVD-Grown Synthetic Diamonds, Part 1: History

    CVD synthetics are cut and polished in the same manner as natural diamonds, at the same cost. The stones can be laser inscribed on the girdle to allow easy preliminary identification. Figure 2 shows typical CVD-grown cut and polished synthetic diamonds. In the next installment of this series, we will look at the properties of CVD synthetic

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    CVD Diamond - FAQ

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    Figure 1. This photograph shows eight of the 52 faceted HPHT synthetic diamonds obtained from AOTC Group, ranging from 0.05 to 0.57 ct. Of the total suite of samples examined, 40 were graded as colorless to near-colorless, a remarkably good color range for HPHT synthetic diamonds, which are commonly produced in fancy colors.

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    The Best Places To Buy Lab Created Diamonds Online

    The term synthetic is not to be used in reference to lab created diamonds as per the FTC ruling. Up to now GIA has been using the term synthetics when referring to lab created diamonds, so it remains to be seen how they will reword their synthetic diamond grading terminology.

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    HTHP : General Electric was also the first to produce gem synthetic diamonds in 1970. These were small and quite yellow. The nitrogen in atmospheric air incorporates into the diamond during the formation process, and acts as a chromophore giving the resulting crystal a yellow color.

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    HTHP : General Electric was also the first to produce gem synthetic diamonds in 1970. These were small and quite yellow. The nitrogen in atmospheric air incorporates into the diamond during the formation process, and acts as a chromophore giving the resulting crystal a yellow color.

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