Soldering rings with gemstones that don't take heat.

www.diycastings... Using hard solders, Craig Dabler shows how to safely solder rings to avoid harming most gemstones. CAUTION: Use of Asbestos can be harmful to your lungs and soldering gold rings with your fingers teaches heat control but I don't advise it to be done without supervision from someone experienced in this method. www.diycastings...