Spectacular ruby and diamond necklace. Photo courtesy Tiancheng International Auctioneer Limited

The necklace flexibly set with one line of oval-shaped rubies in between one line of oval-shaped diamonds and one line of brilliant-cut diamonds, gathered by two similarly-set tassels, terminating in an oval-shaped ruby weighing 3.86 carats and an oval-shaped diamond weighing 5.03 carats, each within a pear-shaped and oval-shaped diamond surround, the ruby and oval-shaped diamond are detachable and can be worn separately as a pendant. Rubies together weighing 103.09 carats and diamonds together weighing approximately 90.51 carats. Mounted in platinum. Length approximately 40.7cm. Estimate US$3,100,000 - 3,600,000

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