Red Tourmaline and Diamond Cocktail Ring. Custom MadeLadies custom made 18kt white gold Red Tourmaline and Diamond cocktail ring. This ring features an oval cut red tourmaline weighing 9. 82 carat weight. Measuring 15. 33 x 12. 00 x7. 64mm. Also featuring 6 x Natural Marquise cut diamonds weighing 1. 38 total carat weight of (VS SI) in clarity and (F G) in colour. Current finger size: 7 3 4. This ring can be resized. Very good condition. Accompanied by an independent appraisal.