... 4.ensure to soiling 5.higher cup Empty Cup chain is widely used in high-grade metal jewelry, ... Generally can be used to clip rhinestones, pearls, rough stone, acrylic, resin rhinestones.our product advantages:1.error rate ... low, normaly is 3 piece.2.softness of chain is very good, 7 pieces can be a ... protect the stone not easy to be out5.good quality cup and chain, increase the strength for cup chain.6. ...