AN UNHEATED COLOUR CHANGE SAPPHIRE AND DIAMOND RING
AN UNHEATED COLOUR CHANGE SAPPHIRE AND DIAMOND RING
Step-cut colour-change sapphire, 6.48 carats
Gemmological report (facsimile copy): Precious Stone Laboratory, no evidence of heat treatment
Trillion cut diamonds, approximate total 0.40-0.50 carats
No assay marks
Size P / 7.5
19.4 grams
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AN UNHEATED COLOUR CHANGE SAPPHIRE AND DIAMOND RING
Step-cut colour-change sapphire, 6.48 carats
Gemmological report (facsimile copy): Precious Stone Laboratory, no evidence of heat treatment
Trillion cut diamonds, approximate total 0.40-0.50 carats
No assay marks
Size P / 7.5
19.4 grams
Estimate
Time, Location
Auction House
