1/3 oz. Blue Glass Vials with Gemstone Rollers and Black Caps (Pack of 12)Enhance the power of essential oils with gemstone rollers. 12 different gemstones. Combine complementary energies. Modern glass color with UV protection. Standard size for make & takes. Details Beautiful blue glass bottles are a handy way to apply essential oils, blends, and massage oils to the skinsimply roll them on as needed! The dark cobalt color helps protects the contents from damaging UV light. The gemstone rollerscombined with essential