The octaedral-shaped 28.84 carat stone is one of the largest ever produced by the Rio Tinto's Argyle diamond mine, located in east Kimberley. It was just right for Valentine's Day at MoBay, sexy and bold, yet classy and sophisticated. Sexy Skin Diamonds Bush. Skin Diamond and Ashlynn Yennie share some of their most intimate stories, both. Skin Diamond on their dedicated page.