FLUORITE is a crystal that has been used since Ancient Egypt through modern times and is known for its healing and cleansing properties. The color of fluorite you choose is said to help you in ...

FLUORITE is a crystal that has been used since Ancient Egypt through modern times and is known for its healing and cleansing properties. The color of fluorite you choose is said to help you in ...

IN connexion with attempts to incorporate more divalent (rather than trivalent) samarium into calcium fluoride single crystals, and thereby make them more efficient optical maser materials 1, we have ...