1,a lot of material.such as crystal,glass,acrylic,resin,noctilucent 2,its acrylic beads, 3,special color:bkack and red. we ... many knid of szie and material . such as glass, crystal ,acrylic, resin and so on. and we also can make special ... we have excellent package and attratived colorabout the acrylic beads,we also have many design can offer for customers.only price different ...