Molten glass is a molded clear glass product without lead content. A mixture of sand, recycled glass and other materials are used to create molten glass products with a shaping mould. Variation in color, size and shape is inherent. In a melted state after the ingredients have been combined at a high temperature and liquefy the batch, it is then allowed to cool until it is plastic and shapeable. Bubbles and flow lines are considered acceptable.