Gaspeite is a light green nickel carbonate from the calcite mineral group. Its medium hardness make it ideal for carvings and fashioning into beads and cabochons.
Chemical composition: Ni(CO3); Hardness: 4.5-5
Silver was known as argentum in ancient Rome, thus its abbreviation as Ag. It is a member of the copper group.
Chemical composition: Ag; Hardness: 2.5-3