Yellow Ceylon sapphire and diamond cluster ring, circa 1970.

Yellow Ceylon sapphire and diamond cluster ring. Set to centre with one oval mixed cut natural no heat Yellow Ceylon sapphire in an open back rubover setting with a weight of 9.00 carats, flanked to either side with six rectangular step cut diamonds in open back rubover settings with a combined approximate weight of 0.55 carats, further adorned by twenty-four round brilliant cut diamonds in open back grain settings with a combined weight of 1.30 carats. The total approximate diamond weight is 1.85 carats to an impressive cluster design with polished edges, a smooth gallery, and fancy shape open back holing, the broad integrated shoulders tapering through to a solid D-shape shank. Tested yellow gold, circa 1970, accompanied by The Gem & Pearl Laboratory report #27028.