Burnishing Rocks with Borax: Tips, Tricks and Advices
Mix borax and water together in a container, maintaining a 1:3 ratio. For example, if you're using 1 cup of water, then mix in 1/4 cup of borax powder. Dip your rocks or gemstones in the mixture. Using a soft cloth or brush, gently rub the rocks or gemstones for a few minutes.