Home > Listing of Enamels > Lump/Frit/Square/20 MeshClick Image To View Larger 724 Gold (tr) (Lump) 16 ozs are Available $6.00 WEIGHT 1 oz ($6.00) 9426:=:6 Quantity: - + Enamel in square form in pristine condition. Lump form enamel, Thompson Enamel for Copper, Silver, Gold, Iron and Steel. Should be fired at 1450 to 1550 degrees F. All Enamel is pre-1990, and lead bearing.