Resin is a chemical compound made up of two parts: part A, which is the resin, and part B, which is the hardener. Both parts are liquids, but they solidify when they're mixed together. There are different types of resin (epoxy resin, polyester resin, and UV resin) and the hardening process takes between 24 and 72 hours, depending on the type of resin. Once dry, resin is non-toxic, hard, shiny, and waterproof. Resin jewelry is any type of...