Ceralun is a versatile and strong two-component, high-performance ceramic epoxy composite, which has been especially developed for the application of Swarovski crystals. It has optimal adhesive characteristics for applications on metal, glass, crystal, glue-able plastic surfaces, rubber, wood, cork, and porcelain. In addition, the mirrored surface of the crystal is protected against mechanical stress by the gentle build-up of adhesion, the optimized load transmission, and the maximum elasticity. Swarovski Round Stones, Fancy Stones and Flat Backs No Hotfix are commonly used with Ceralun. You can choose to purchase either 100g (in original pack) or 20g (repacked).