A colour-change sapphire and diamond ring
A colour-change sapphire and diamond ring The oval cabochon colour-change sapphire, weighing approximately 17.20 carats , in a collet mount between tapered baguette-cut diamond shoulders, finger size N½ Accompanied by report no. GRS2013-020649T from Gem Research swisslab (GRS), dated 2nd March 2013, stating that the sapphire colour changes from violetish-blue (daylight) to purple (incandescent) and no indication of thermal treatment was observed.
A colour-change sapphire and diamond ring
A colour-change sapphire and diamond ring The oval cabochon colour-change sapphire, weighing approximately 17.20 carats , in a collet mount between tapered baguette-cut diamond shoulders, finger size N½ Accompanied by report no. GRS2013-020649T from Gem Research swisslab (GRS), dated 2nd March 2013, stating that the sapphire colour changes from violetish-blue (daylight) to purple (incandescent) and no indication of thermal treatment was observed.
.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
.jpg?height=400 "Quelle: Christie's")
.jpg "Quelle: Christie's")
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
