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細節
COLOUR-CHANGE SAPPHIRE AND DIAMOND RING
Cushion-shaped colour-change sapphire of 6.00 carats, circular-cut diamonds, ring size M ½
Gem & Pearl Laboratory, 2019, report no. 16883: 6.00 carats, Madagascar, no evidence of heat treatment
Cushion-shaped colour-change sapphire of 6.00 carats, circular-cut diamonds, ring size M ½
Gem & Pearl Laboratory, 2019, report no. 16883: 6.00 carats, Madagascar, no evidence of heat treatment
榮譽呈獻
Keith Penton