Rectangle black onyx 14k white gold ring with hammering texture.? Onyx is 25 mm x 18 mm, weighing approximately 27- 30 grams based on ring sizes.? The top of the ring is 27.5 x 22 mm, the Side shank is 24.5mm, and tapered down to 8mm. A statement piece is made one at a time.? Available in yellow gold and rose gold. Please inquire.?