A colour-change sapphire and diamond ring, 2000 The cushion-shaped colour-change sapphire within a brilliant-cut diamond surround, mounted in 18 carat yellow gold, UK hallmark, European convention mark, ring size approx. L Fußnoten Accompanied by a report from The Gem & Pearl Laboratory stating that the colour-change sapphire is natural, Sri Lankan origin, with no evidence of heat treatment. The sapphire appears blue in daylight and bluish purple in incandescent light. Report number 18052, dated 15th November 2019.
A colour-change sapphire and diamond ring, 2000 The cushion-shaped colour-change sapphire within a brilliant-cut diamond surround, mounted in 18 carat yellow gold, UK hallmark, European convention mark, ring size approx. L Fußnoten Accompanied by a report from The Gem & Pearl Laboratory stating that the colour-change sapphire is natural, Sri Lankan origin, with no evidence of heat treatment. The sapphire appears blue in daylight and bluish purple in incandescent light. Report number 18052, dated 15th November 2019.
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg?height=400 "Source: Christie's")
.jpg "Source: Christie's")
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
