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細節
MID 20TH CENTURY SAPPHIRE AND DIAMOND RING
Cushion-cut sapphire of 19.39 carats, old and circular-cut diamonds, one small diamond deficient, ring size K
Gem & Pearl Laboratory, 2019, report no. 17065: 19.39 carats, Sri Lanka, no evidence of heat treatment
Cushion-cut sapphire of 19.39 carats, old and circular-cut diamonds, one small diamond deficient, ring size K
Gem & Pearl Laboratory, 2019, report no. 17065: 19.39 carats, Sri Lanka, no evidence of heat treatment
榮譽呈獻
Keith Penton