Rutile gemstone

Rutile quartz is the rock crystal that contains needles or golden blades of rutile. When parallel inclusions of rutile occur,the material can be cut to show a cat’s-eye effect. The inclusions are sometimes called Venus hair. This was called in French «flèches d'amour» or Cupid's darts. It has also been called Thetis hairstone, needlestone or sagenitic quartz.