An exquisite coloured diamond and multi-gem butterfly clip brooch, by Wallace Chan. Photo Christie's Image Ltd 2007

Designed as a butterfly, the body set with a cushion-shaped tsavorite garnet and vari-cut yellow diamonds, to the butterfly specimen wings encased in carved rock crystal with mother-of-pearl back, enhanced by brilliant-cut yellow to brown diamond trim and accents, mounted in titanium, 6.5 x 8.5 cm. Signed Wallace for Wallace Chan. Estimate HK$450,000 - HK$650,000. Price Realized HK$727,500

Christie's. Magnificent Jewellery & Jadeite Jewellery, 28 November 2007, Hong Kong