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A SAPPHIRE AND DIAMOND RING, BY OSCAR HEYMAN & BROTHERS
PROPERTY OF A PRIVATE COLLECTOR 
A SAPPHIRE AND DIAMOND RING, BY OSCAR HEYMAN & BROTHERS

Details
A SAPPHIRE AND DIAMOND RING, BY OSCAR HEYMAN & BROTHERS
Set with a rectangular-cut sapphire, weighing approximately 23.06 carats, flanked on either side by a half moon-cut and a tapered baguette-cut diamond, mounted in platinum, with maker's mark
With maker's mark for Oscar Heyman & Brothers, no. 504467
With report CS 65781 dated 30 March 2015 from the American Gemological Laboratory stating that it is the opinion of the Laboratory that the origin of this sapphire would be classified as Thailand. No gemological evidence of heat

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