Handcrafted from high-strength, heat- and frost-resistant glass fiber reinforced concrete Hand molding process results in a seamless design without joints Multistep hand finishing process captures the texture and color of natural travertine limestone; no two are exactly alike. Like natural stone, it will develop a patina when left outdoors. Includes decorative natural lava rock Innovative brass burner system uses half the fuel of conventional fire rings Adjustable flame control NATURAL GAS: Prof