White opal ring. Assembly of a ring encrusted in stone set with diamonds. Rings, rings SKILLS Posted on it September 18, 2018 ← Ring in a palladium white gold setting. A rubellite tourmaline in the center, set with four prongs. Diamonds on either side in a grain setting. A cushion-cut sapphire is set within the band. A gradient of sapphires inside the ring transitions towards diamonds. →