Enamel through a process that requires 80 hrs. It is available in 18-karat white gold with various shades of green or in 18-karat pink gold with blue hues, both accented with diamonds. The base metallic of each and every is initially sealed that has a transparent enamel and then layers https://www.watchesworld.com/from-sean-to-daniel-tracing-the-evolution-of-james-bonds-iconic-watch-collection/