Cristobalite

From whiteness to durability, cristobalite sands and powders bring a wide range of benefits as a specialist additive in engineered stone, coating and polymer applications. 

Our cristobalite is a high temperature polymorph of high purity quartz, produced at 1,500°C through calcination and iron-free grinding. 

The calcination process changes the crystalline composition of the quartz, creating a more open ring structure of Si02 units. Our cristobalite sands and powders offer one of the highest brightness levels of any mineral. 

Cristobalite can be characterized by:

– high brightness

– relatively high Mohs hardness of 6.5

– relatively low refractive index

– easy wetting

– high inertness in various media

– transparency for UV-radiation