Description: Volcanic stone commonly known as pumice or porous basalt, it is a kind of functional and environmental material. It contains dozens of minerals and microelements, such as sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt and molybdenum and so on. 

Usage: construction, water conservancy, grinding, filter material, barbecuecarbon,landscape architecture, soilless cultivation, ornamental products and other fields.

Color: red,black.white
size: 3-6mm,6-8mm,8-10mm,1-3cm,3-6cm,6-8cm,8-10cm,10-50cm can be customized.style: stone, particle, powder.