Lady's 18K White Gold Black Onyx & Diamond Neiman Marcus Ring. Ring Size: 9 1/4 (Can be Resized to Fit Most Any Finger.) Contains: Natural Round Brilliant Cut Diamonds. Weight Approx: 1.50cttw, Color: Near Colorless. From the Neiman Marcus jewelry collection of 2006, comes this arresting modernistic ring composed of black onyx & diamonds in an 18k white gold mounting. It is quite modernistic and certain to be an attention grabber. The superior workmanship shows that it was done by Italian. This high styled ring is a perfect ring for a black dress event, and is suited to the hand with long fingers. The retail for this ring from Neiman Marcus was $8,700.