Tooth Gems are also considered a cosmetic service where a tooth gem is placed on natural teeth by using the same adhesive that dentists use for braces. Tooth Gems are non-invasive, do not damage enamel, painless, and are semi-permanent. I use 100% real Swarovski crystals, 18kt gold, and 18kt white gold gems. Tooth gems can last anywhere from 1 month to a year or longer depending on the client's oral habit.