Emerald and diamond pendent earrings, by Van Cleef & Arpels. Photo courtesy Tiancheng International Auctioneer Limited

Each suspending a pear-shaped emerald together weighing approximately 42.00 carats, surmounted by a floret composed of five pear-shaped diamonds with a brilliant-cut diamond pistil. Mounted in 18 karat yellow gold and white gold. Emerald drops detachable and the diamond floret can be worn as a pair of ear studs. Signed Van Cleef & Arpels and numbered 12816. Estimate US$310,000 - 450,000

Accompanied by Gübelin report numbered 12110317/1 and 12110317/2 dated 05 December 2012, stating that the 40.22 carat emeralds are natural, of Columbian origin, with indication of minor clarity enhancement. Also accompanied by a SSEF report numbered 64552 dated 28 August 2012, stating that the 22.00 and 20.00 carats are natural, of Colombian origin, with indication of minor clarity enhancement.

Tiancheng International Auctioneer Limited. SPRING AUCTION 2013 JEWELLERY AND JADEITE. 15 Jun · 3 pm. Hong Kong Headquarters 30/F Bank of China Tower 1 Garden Road, Central Hong Kong http://www.tianchengauction.com/