An Art Deco jadeite, diamond and onyx brooch, by Cartier, circa 1925. Estimate HK$70,000 - 90,000 (€8,200 - 11,000). Photo: Bonhams.

The carved 'Double Happiness' jadeite plaque of bright green colour, measuring approximately 18.7 x 12.9 x 1.8mm, accented by rose-cut diamonds and calibré-cut onyx, signed Cartier Paris, numbered, maker's mark, French assay mark, length 5.0cm 

Accompanied by a Hong Kong Jade & Stone Laboratory report stating that the selected natural colour fei cui (jadeite jade) has no resin detected. Report number SJ 112707, dated 20 March 2015.

Bonhams. FINE JEWELLERY & JADEITE, 3 Jun 2015 14:00 HKT - HONG KONG, ADMIRALTY