Lot 616. A Rare Early 20th Century 11.30 carats Sapphire, Onyx and Diamond Ring, by Van Cleef and Arpels, Circa 1920.  Estimate HK$ 120,000 - 150,000 (€15,000 - 18,000). Photo: Bonhams.

The cabochon star sapphire, within a frame of old brilliant-cut diamonds, highlighted by crescent-shaped cabochon onyx, sapphire approximately 11.30 carats, signed Van Cleef & Arpels, numbered, ring size 4, fitted case 

Bonhams. RARE JEWELS & JADEITE, 30 Nov 2016, 15:00 HKT - HONG KONG, ADMIRALTY