HPHT/CVD
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2017-11-17 · In other words, an inscription number belonging to a natural diamond was forged onto a synthetic. This, needless to say, is an issue. The older report was for a natural, untreated diamond and contained the following grading information: 1.74 ct, round brilliant cut, D color, Excellent cut grade, and VVS1 clarity.
2016-11-7 · Observations on HPHT-Grown Synthetic Diamonds: A Review. Figure 1. This collection of HPHT synthetics shows the major color products. The background is a DiamondView image with a cross-shaped fluorescence pattern, a well-known diagnostic feature of HPHT synthetics.
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2019-2-7 · De Beers has previously claimed that its decades of investment in synthetic diamonds have enabled it to offer Lightbox jewelry at the relatively low retail price of $800 per carat. One factor in that is its capacity to grow diamonds .
2019-2-7 · De Beers has previously claimed that its decades of investment in synthetic diamonds have enabled it to offer Lightbox jewelry at the relatively low retail price of $800 per carat. One factor in that is its capacity to grow diamonds with good-enough color .
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Coloured Round Diamond (7) Cultured Diamond (30) CVD Diamonds (41) Lab Grown Diamond (37) HPHT Diamonds (39) Loose Cut Diamond (26) Synthetic Diamond (33) ROUND BRILLIANT CUT (35) Laboratory Grown Diamond (32) Man Made Diamond (32) White Diamond (29) Laboratory Created Diamond (33) CVD Solitaire Diamond (6) Round Polished Diamond (32) .
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2 · 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 .
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