This pretty estate ring features a rectangular shaped black onyx stone mounted in 10kt yellow gold. This black onyx stone has an old single-cut diamond pierced into the center of this stone. This estate jewelry black onyx measures W1/2 inch x H5/8 inch.  This black onyx ring has cut corners that align with the diamond pattern at the center of this ring.

Diamonds: One single-cut diamond measuring appx 0.05 carat weight
Weight: 2.7 Grams
Size: 6