These glazes create gorgeous reduction-like effects when fired at Cone 5-6 oxidation whether used as a single glaze or layering multiple colors. Lead-free and dinnerware-safe when used and fired as recommended.Set includes (12) 4 fl oz jars of Mid-Fire Glaze: Blackened Copper, Teal Agate, Blue Moss, Wisteria, Variegated Lapis, Gossamer Drift, Buttermilk, Champagne Quartz, Ethereal Blue, Jasper, Nightshade, Green Tourmaline