Stunning vintage 16 carat Green Tourmaline Cocktail ring surrounded by 27 Diamonds and 4 < clusters ( Diamond weight is 4 carats total) set in a unique 18 karat gold ring setting, setting has a lovely art deco feel. Tourmaline has a beautiful emerald cut. Very rare style and look. Total gram weight of this lovely cocktail ring is 16.2 grams. Size 7