This refractometer liquid is what you need when working with gemstones in your shop.  This Gem-Master liquid is safer than other liquids on the market because of the protective stopper on the bottle that prevents spillage.  To use, place a small drop with the gemstone to help determine the stone’s refractive index.  Without this liquid, you will not get an accurate reading for the stone.  The liquid is also economical and long-lasting since you only need a small drop per test.  Each bottle comes with an information and instruction sheet for extra assistance.  Order today at Stuller.com/tools.