Many people want to know what the liquid gold is. Gold plating is a technique that requires:
Gold, Silver, Platinum bright precious metal compounds are preparations of precious metal-containing organic combinations with flux materials as adhesive agent and resins as film former. They create glossy, high shiny surfaces. The main properties of fired bright precious metal decorations comprise brilliance and precious metal tone, dishwasher resistance and resistance to mechanical and chemical attack. Heraeus gold is the highest quality preparation with different features, tones, and effects.
Platinum, Silver and Liquid Gold for ceramics are the most critical standard and special products available to find.
More about Painting and Glazing with pure 24 karats bright gold can be found on this link: Colloidal Gold, Silver, Colloidal Platinum on Wikipedia