08/23/2026
A GIA 3.66 ct Sapphire Ring in Platinum | Lot 257
Blue at the center, brilliance all around it. This platinum ring is built around a cushion cut sapphire of 3.66 carats, accompanied by GIA Gemological Report #1232596972, prong set within a frame of round diamonds. Milgrain detailing traces the edges of the mounting and carries onto the high polish shank, a finishing technique that rewards a close look and separates hand finished platinum work from everything that came after it. Signed by the maker.
Platinum ring by Otto Gofflieb, cushion cut sapphire 3.66 ct with GIA report, prong set round diamond frame, milgrain details, high polish shank, signed, size 7, 5.8 grams.
Auction Day: August 27
Estimate: $3,000 to $5,000
Click here to bid and learn more: https://bid.alexcooper.com/lots/view/1-DALXIV/a-gia-366-ct-sapphire-ring-in-platinum