"Specifications: - This is a Raw Cut Full Blue Opal Solitaire Ring The total Shank width of this ring is 1.5mm, Standard Fit - METAL COLOR: Choosing a different metal may change the color of all the metal pictured (unless otherwise specified above). We don't plate the metal to give it a different color. If you choose one of the gold options, the ring will be made in 10k Gold, unless otherwise specified in the specifications above. (See metal option picture as a reference) - RING SIZING: If yo