Sterling Silver & Stone Necklace: Express your love with this sterling silver granulated heart and a tiny round-cut ruby heart that is also silver. Included is an 18-inch chain. handcrafts beautiful pendants utilizing the age-old technique of granulation, following in the footsteps of ancient silversmiths. It takes years of experience to granulate with the purest metals. It can take weeks to make enough by hand for a single item of jewelry. Next, one by one, each granule is inserted.