Diamond ring with 360° bands of Black Jade
The jeweler's customer wanted Black Jade bands on the outsides of their Diamond ring to act as 'bumpers' of a sort.
Black Jade is one of the only materials we would recommend for this because it is so tough. Black Onyx would not last long because it is brittle. See our Black Jade page for photos and a video demonstrating the toughness of Black Jade.