The Enameler introduces coloration both by using coloured glass or by including pigments on the glass previous to firing. Following the glass melts and flows, it cools into a tricky, sleek coating about the substrate. Encapsulating this lovely dial is usually a 38mm 18K yellow gold circumstance with 10.7mm thickness, https://www.watchesworld.com/exploring-the-aesthetics-of-dial-design-and-decoration/