Burmese Sapphire and Diamond 'Rose' Brooch. Estimate HK$480,000 - 680,000 (US$61,500 - 87,200). Photo Tiancheng International 

Modelled as a rose, the pistal set with brilliant-cut diamonds together weighing approximately 2.15 carats, embellished with circular-cut and oval sapphires to the petals, the sapphires together weighing approximately 190.20 carats, mounted in blue-coloured titanium and 18 karat white gold.

Accompanied by SSEF report numbered 81583, dated 24 August 2015, stating that the sapphires ranging from 0.20 to 0.10 carat are natural, Blue colour of medium strong to strong saturation, containing sapphires of Burmese origin, with no indications of heating; with a comment stating that 'Due to the setting, only about 30% of the sapphires could be tested and all conclusions only refer to this selection of sapphires'.

Tiancheng International. HONG KONG AUTUMN AUCTION, Jewellery and Jadeite