definition

Tourmaline is a boron silicate crystal. It’s a jewel as well as a natural 

drug ore which has healthcare function. We mainly process and supply 

black tourmaline.

Physical 

property

transparency

cleavage

hardness

Specific gravity

Refraction

birefraction

Completely 

transparent 

or half-transparent

no

7~8

3.06g/cm3

(+0.20,-0.60)

1.624~1.644

0.018~0.040

Chemical 

composition

Si2O3,Fe2O3,MgO,CaO,K2O,Na2O,TiO2,P2O5,MnO,K,Na,Ca,

Mg,Cu,Mo etc.

specification

Tourmaline lump:1cm below,1-2cm,2-5cm,5cm above

Tourmaline granule:1-4mm,3-5mm,5-8mm,10-30mesh,30-60mesh

Tourmaline powder:80,100,200,325,500,800,1200,

                 1500,2000,3000,4000,8000mesh

Tourmaline ceramsite:1-2mm,2-5mm,5-8mm,18-20mm,25mm

feature

·producing anion

·electrolysis of water

·narrowing the beam of water molecules

·radiating far infrared

·containing effective trace minerals

application

Widely used in environmental protection, electronics, daily use chemicals, 

textiles, ceramics, buildings, drinking water activation, sewage treatment, 

air purification, healthcare products etc.

packing

25kg/bag or as per client’s request