A Double Strand South Sea Cultured Pearl and Diamond Necklace. Photo courtesy Tiancheng International

Composed of forty - four silver to dark grey coloured south sea Baroque cultured pearls, measuring 15.0 to 17.0 mm. Attached to a fancy form diamond clasp, weighing 5.25 carats, mounted in 18k white gold, 54 cm long. Estimate HK$170,000 - 270,000 US$21,800 - 34,600

Tiancheng International. Hong Kong Autumn Auction 2011. 28 Nov 2011 www.tianchengauction.com