Platinum, ruby and diamond ring

Platinum, ruby and diamond ring. Photo courtesy Sotheby's.

Set with a cushion-cut diamond weighing 5.70 carats and a cushion-cut ruby weighing 10.28 carats, the mounting decorated with old European and single-cut diamonds weighing approximately 1.05 carats, size 6¼; circa 1915. Estimation 150,000 — 200,000 USD 

Accompanied by GIA report no. 2155606678 stating that the diamond is E color, VS1 clarity.

Accompanied by AGL report no. CS 56435 stating that the ruby of Burmese origin, with no indications of heating.