Vintage 18k yellow gold genuine Black Coral & 13 stone .40 cttw Round Brilliant Cut diamond ring of a contemporary motif. These diamonds average H-I in color and SI1 in clarity. These diamonds are nicely proportioned and well finished. This ring measures 12.5 mm at the top, tapering to 4 mm at the base of the shank. This ring has an entire weight of 14.08 grams. This ring is a finger size 10, but it can be reasonably sized. Please make note of the finger size desired in the comments section at checkout. This ring is signed on the side by the designer.