Lot 133. 10.28 carats Burmese Ruby and diamond ring. Estimate 25,000 — 35,000 GBP (31,770 - 44,478 EUR). Photo: Sotheby's.

Claw-set with an oval ruby weighing 10.28 carats between triangular-shaped diamond shoulders, size M, partial assay and maker's marks. 

Accompanied by SSEF report no. 83149, stating that the ruby is of Burmese origin, with no indications of heat treatment.