11 octobre 2017
Star Ruby and Diamond Ring
Lot 9189. 5.31 and 5.05 carats Star Ruby and Diamond Ring. Estimate 400,000 — 500,000 HKD . Photo: Sotheby's. Of crossover design, set with two cabochon star rubies weighing 5.31 and 5.05 carats respectively, to the circular-cut diamond-set surrounds...