Slate Black Heat Resistant Natural Fire Stones for Fireplace , Fire Pits

Description                                Slate Black Semi polished Fire Stones Natural Basalt Stones Easy Installation No smoke  Perfect replacement for fire logs  Retains more heat than ceramic logs  Use in fireplaces, fire pits and garden    These stones are heat resistant and will sustain heat generated by gas or ethanol systems (tested with positive results with units up to 90,000 BTUs).  Each fire stone bag covers most standard-size fireplaces (±1 sq. ft. coverage), and weighs 18 to 20 lb. Stone size is approx. 1 inch to 2 inch.  Please make sure to follow the fireplace or burner’s manufacturer’s recommendations before installation. Please Note:  It is recommended to keep all the opening clear and a clearance space around the burner. Wash with lukewarm water to clean any residue, oil or dirt. Colors shown here are for reference only. Actual stones may vary in size and color. Before making a purchase make sure with your fireplace or fire pit manufacturer that it is fit to be used with stones. Improper use may lead to undesired results such as stones turning black or bursting flame.