27 avril 2014
Sapphire and diamond ring, Gübelin
Sapphire and diamond ring, Gübelin. Photo Sotheby's The oval sapphire weighing 13.27 carats, set between triangular diamond shoulders, size 53, maker's mark. Estimation 135,000 — 225,000 CHF Accompanied by SSEF report no. 72030, stating that the sapphire...