Model Amanda S shows An Extremely Rare 10.10 Carats Burmese No Heat Pigeon's Blood red Ruby and Diamond Brooch, by Cartier during Christie's media preview of Handbags and Accessories, Magnificent Jewels and Important Watches at Chater Road in Central. 17N [Getty Images]

Model Amanda S shows An Extremely Rare 10.10 Carats Burmese No Heat Pigeon's Blood red Ruby and Diamond Brooch, by Cartier during Christie's media preview of Handbags and Accessories, Magnificent Jewels and Important Watches at Chater Road in Central. 17NOV14 (Photo by Sam Tsang/South China Morning Post via Getty Images) — see more

Model Amanda S shows An Extremely Rare 10.10 Carats Burmese No Heat Pigeon's Blood red Ruby and Diamond Brooch, by Cartier during Christie's media preview of Handbags and Accessories, Magnificent Jewels and Important Watches at Chater Road in Central. 17NOV14 (Photo by Sam Tsang/South China Morning Post via Getty Images)