BLACK SOAPSTONE Black soapstone is a manufactured stone from Brazil. Soap stone is metamorphic rock that contains the mineral talc and magnesium. This stone is almost a solid black. Soapstone is heat resistant, stain resistant, nonporous, and resistant to attack from acids and bases. It is often used as a natural stone countertop in kitchens and laboratories. Hot pots can be placed directly on it without fear of melting, burning, or other damage. We have this material available in 2cm slabs.