18 carat White Gold Ring With Pink Spinel & Pink Sapphire Surround. The pink Spinel is a cabochon cut and weighs 4.58 carats and the 20x pink Sapphires in the surround weigh 1.11 carats. The ring weighs 15.1 grams in total. The ring is designed by Jules Collins and is made in Australia. In store in Sydney.