natural rough tourmaline
2015/1/6 11:31:08
Color : honey color
Size : mixed Production
Capacity : 10000 kg per month
Minimum order Quantity : 4 kg
Hardness : 7 - 7.5
Refractive Index : 1.62 - 1.64
Relative Density : 3.03 - 3.10
Crystal Group : Trigonal
Transparency : semi transparent to transparent