Pink tourmaline and diamond 18 carat rose gold ring by Astley Clarke Tearoo. This elegant designer ring features an oval cut pink tourmaline surrounded by white diamond. A stunning and unusual engagement ring, the framed pink tourmaline sits 6mm proud of the finger and has diamonds continuing down the shoulder. 60 carat total diamond weight and . 00 carats total tourmaline weigh. Paying homage to the golden age of glamour, this collection showcases exquisite coloured gemstones set in 14 carat and 18 carat gold: an archetypal selection of cocktail rings and pendants - lovingly evolved for modern-day sophisticate.