Purchase Qty. Reference FOB Price
5-499 kg US$5.00
500-4,999 kg US$4.50
5,000-9,999 kg US$4.00
10,000+ kg US$3.00
Product Description
Product Description Tourmaline is the general name of tourmaline group minerals. It is a silicate mineral with ring structure of aluminum, sodium, iron, magnesium and lithium. The hardness of tourmaline is usually 7-7.5. Tourmaline crystal rough is mined from the natural tourmaline mine.Tourmaline ...