Ruby and Fancy Vivid Yellow Diamond Ring, by Picchiotti. Photo courtesy Tiancheng International Auctioneer Limited

Centring on an oval-shaped ruby weighing 8.05 carats, flanked by two oval-shaped Fancy Vivid Yellow diamonds weighing 1.29 and 1.28 carats. Mounted in platinum. Signed Picchiotti. Ring size: 6 1/4. Estimate US$440,000 - 520,000

Accompanied by GRS report numbered GRS2012-033061 dated 21 March 2012, stating that the 8.05 carat ruby is natural, of Mozambican origin, Vivid Red colour, with no indication of thermal treatment. Also accompanied by GIA report numbered 2141566068 and 6147566003 dated 24 October 2012 and 28 September 2012, stating that the 1.29 and 1.28 carat diamonds are natural, of Fancy Vivid Yellow colour, VS2 and SI1 clarity.

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/