Bohemian bliss. EFFY Collection's chic cocktail ring features an oxidized sterling silver band with an intricate woven pattern and an oval-cut citrine (4-1/10 ct. t.w.) center stone. Approximate width: 9/10 inch. Size 7. Almost all gemstones and blue and black diamonds have been treated to enhance their beauty and require special care. All gemstone carat weights (ct. t.w.), if mentioned, are approximate; variance may be .05 carat. Custom ring sizing is not available for this item. Ring Sizer.