Magicolor Flame Crystals - Sprinkle On Wood Burning Fires, Creates Blue And Green Flames In Actively Burning Wood Fueled Fireplaces, Burn Up To 1 Hour In Air-Tight Stoves Or 10 - 15 Minutes In Open Fires, For Use In Wood Fires: Wood Fireplaces, Wood Fire Pits, Chimineas And Campfires, NOTE: Not For Use In Gas Fireplaces, SKU: TWST5422