Jewelry by Johan offers wedding bands and engagement rings in both traditional and alternative metals/materials, including platinum, gold, tungsten and jewelry grade ceramic (non-metal, hypoallergenic). Because we handcraft our items, you can customize designs to feature your preferred metal in nearly any ring. There is typically no customization cost to change the metal unless you switch to an option that is more costly (e.g. titanium to platinum). The gold color can be changed in any item and the cost stays the same if the karat stays the same (e.g. 14k white gold to 14k rose gold).