Vintage 1990s Three Stone Platinum and 18K Gold Ring

A vintage three stone ring with an oval ruby and oval diamonds, set in 18K yellow gold and platinum. Circa 1990.

• Ruby:  5.79 carats, accompanied by a GIA report, origin Thailand with minor heat treatment 
• One Diamond:  1.06 carats, E color, VS2 clarity, accompanied by a GIA report
• One Diamond:  1.01 carats, D color, VS2 clarity, accompanied by a GIA report
• Size:  7; sizable