This is a very nice Art Deco bracelet. There are 8 black Onyx plaques with tiny rhinestones in the centers. The metal is silver filigree. No hallmarks for sterling, so I would say that the metal is silver plated. The filigree work is lovely, going around each black onyx plaque. Length is 7 1/2". width is 5/8". Weight is 16.9 grms. Nice filigree clasp that does snap tightly closed. Condition is very good for age. I would date this great bracelet at c1920's.