Gemstone bezel are all madeof copper,have some different colors (gold,silver,Imitation Rhodium).they are all Hollow,you could put any you likes stone on them,and use them made many different jewelry. If you are interested in these gemstone bezel,plz feel free to visit our store,http ://www.aliexpress.com/store/group/New-Arrival-Nov-2013/417565_251836066.html; we also have some match resin stone.