Art Clay Gold Paste comes in a viscous liquid form, so that you can add texture or draw directly on the surface of Art Clay Silver (fired piece), ceramic, porcelain and/or glass. 77.5% of the indicated weight is 24-Karat gold, and will become 22-Karat gold after firing. Art Clay Gold Paste comes in two bottles. One has 1.5gm of thick paste; the other contains a 5ml medium that is used to dilute the paste to a more workable consistency on glazed surfaces.Fires at 800â„ƒ . The holding time will vary depending on the combined material.