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挑选裸钻 定制戒托 精美成品
     
     
Known for its remarkable hardness(nearly as hard as diamonds)and scratch resistance. Also used by a certain fruit company in some of their mini wrist computers. Known for its remarkable hardness(nearly as hard as diamonds)and scratch resistance. Also used by a certain fruit company in some of their mini wrist computers. Known for its remarkable hardness(nearly as hard as diamonds)and scratch resistance. Also used by a certain fruit company in some of their mini wrist computers.