Enamel for the duration of a method that takes 80 several hours. It comes in 18-karat white gold with different shades of green or in eighteen-karat pink gold with blue hues, both of those accented with diamonds. The bottom metallic of each is initially sealed that has a transparent enamel https://www.watchesworld.com/from-sean-to-daniel-tracing-the-evolution-of-james-bonds-iconic-watch-collection/