Cross Pendant Top This item is about 30 years old. The black material in the center of the silver is unknown. Material: Silver 925 Hallmark on the clasp. Weight: Approximately 5g There is some tarnish, so please polish it with a silver cloth. For slight discoloration, you can restore the shine just by polishing it with a silver polishing cloth (available at 100-yen shops). Only the accessory will be shipped. No case or other accessories included. By the way, the current purchase price for Silver 925 is 493 yen per gram.