A Jadeite Bead and Diamond Necklace. Photo Christie's Image Ltd 2014

Designed as a two-strand necklace, comprising one hundred and twenty graduated jadeite beads of intense emerald green colour and very good translucency, measuring from 4.0 to 11.7 mm, interspersed by diamond beads, to the 18k oxidized gold clasp set with brilliant-cut diamonds, (can be worn as single-strand necklace), 48.5 cm long (2). Estimate HK$2,800,000 – HK$3,800,000 ($362,991 - $492,630)

Accompanied by two reports nos. KJ84880 and KJ84881 dated 24 March 2014 from Hong Kong Jade & Stone Laboratory stating that the beads are natural jadeite and no polymer is detected.

Christie's. HONG KONG MAGNIFICENT JEWELS, 27 May 2014. Convention Hall - http://www.christies.com/