Soapstone retains heat better and lasts longer! 
Premium Soapstone Fireplace Stones: Our fireplace stones are made from high-quality soapstone, ensuring extended heat retention and dispersion.
Low Ash Production: Soapstone Fireplace Stones produce NO ash.
High Heat Retention: Soapstone's exceptional heat retention properties ensure a consistent and steady release of heat.
LARGE 20lb box. 
Great gift idea!