Diamond and Yellow Diamond Necklace. Photo courtesy Tiancheng International Auctioneer Limited

The necklace of semi-flexible openwork design, set by brilliant-cut diamonds and variously-cut yellow diamonds. Necklace length 45cm, with a 7cm adjustment length. Mounted in 18K yellow and white gold. Estimate US$42,000 - 62,000

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/