Vintage HOB Sterling Silver & Onyx Modernist Design Cuff Bracelet Made of sterling silver with a large onyx cabrochon Measures approximately 7 inches around including a 1.5 inch opening. This bracelet does not have a lot of flexibility to adjust for larger or smaller wrists so please check your wrist size. Weigh is 56 grams Stamped H.O.B., Mexico and 925