Margot McKinney Jewelry pearl cocktail ring. Polished 18-karat rose gold band and settings. Naturally hued Australian South Sea cultured pearl. Oval face with pearl center and mixed stone pavé. Pink tourmaline and diamonds with pink and purple sapphires. 3. 47 total purple sapphire carat weight. 2. 89 total pink sapphire carat weight. 1. 80 total diamond carat weight. 0. 21 total tourmaline carat weight. Pearl dimensions: approx. 16. 6mm. Tapered, half-round shank.