... 300 or otherscolornature shell colorshapeSquare , rectangle , irregularfeaturesenvironmental , no harm to bodyno radiation, no pollutionagate mosaic:Feature:1) Usage ... 3) Finished product thickess:5~20mm or others Shell Thickess:1.0~2.0mm 4) environmental ,no ... natural shells, such as mop shell, ablone shell, Chinese river shell, black MOP , yellow MOP , pink Shell, pen Shell etc. 8) Processing technic: ...