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- Sep 3, 2000
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I have a dealer customer who wants us to authenticate about 100 P/Q/R color diamonds as natural origin of color.
What would your basic tests for this be? What would be your secondary tests or do you think simple testing for diamond type 1a would be adequate to screen these sufficiently.
Type 1a are colorless to cape series stones.
Type 1b contain the "fancy yellows"
Type 2a are the brown series, the synthetics and a few rare naturals other colors (about 1%)
Type 2b are the natural and sythetic blue stones (with boron) that are electrically conductive. The synthetics are generally also magnetic.
I know HTHP can be used on any stone, but I don''t think type 1a diamonds would be worked on to obtain P/Q/R colors. It would sort of be a wasted effort.
Any assistance in this would be greatly appreciated.
Thanks.
What would your basic tests for this be? What would be your secondary tests or do you think simple testing for diamond type 1a would be adequate to screen these sufficiently.
Type 1a are colorless to cape series stones.
Type 1b contain the "fancy yellows"
Type 2a are the brown series, the synthetics and a few rare naturals other colors (about 1%)
Type 2b are the natural and sythetic blue stones (with boron) that are electrically conductive. The synthetics are generally also magnetic.
I know HTHP can be used on any stone, but I don''t think type 1a diamonds would be worked on to obtain P/Q/R colors. It would sort of be a wasted effort.
Any assistance in this would be greatly appreciated.
Thanks.