18k (used for permendant)

18k gold grillz are dental accessories made from 18-karat gold, which is a type of gold alloy. The "k" in 18k stands for karat, which is a unit used to measure the purity of gold. In an 18k gold alloy, 75% of the material is pure gold, while the remaining 25% is comprised of other metals like copper, silver, or palladium.