A magnificent jadeite and diamond ring, by Chow Tai Fook. Photo Christie's Image Ltd 2014

Set with a thick high domed oval jadeite cabochon of even vivid emerald green colour and high translucency, within an oval-shaped diamond surround, to the brilliant-cut diamond trifurcated half-hoop, mounted in 18k white gold, cabochon approximately 22.5 x 18.8 x 12.4 mm, ring size 6½. With maker's mark for Chow Tai Fook. Estimate HK$6,000,000 – HK$8,000,000 ($777,838 - $1,037,117)

Accompanied by report no. KJ84992 dated 2 April 2014 from Hong Kong Jade & Stone Laboratory stating that the cabochon is natural jadeite and no polymer is detected

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