Citations:television stone

English citations of television stone

• 2005, Richard Beatty, Boron, Marshall Cavendish, →ISBN, page 11:

  ... TELEVISION STONE The boron mineral ulexite shows remarkable properties . The mineral is made of sodium , calcium , oxygen , and boron . Ulexite crystals often grow as fibers forming tiny straight lines . When the crystal is polished and […]

• 2018 February 27, ReGina Welling, Erin Lynn, Murder Above the Fold: A Cozy Witch Mystery, Willow Hill Books:

  ... ulexite as I could find. Ulexite, of all things!” “Television stone,” Mag told Clara. She had a catalog of useful information in her head. “When sliced crosswise and polished, it has fiber optic properties. In magic, it's used for […]

• 1968, John Sinkankas, Van Nostrand's Standard Catolog of Gems:

  ... ULEXITE Fibrous ulexite , or " television stone , " is sometimes cut into catseyes and spheres ; while initially taking a good polish , any normally damp atmosphere alters the surface and destroys the polish . Very soft and fragile […]

• 1963, The Journal of Gemmology:

  ... ulexite ( television stone ) , which is able to transmit pictures along the length of the fibrous crystals , are mentioned . R.W. WHITWORTH ( H. F. ) . Amethyst from Onslow , W. Australia . Australian Gemmologist , 1956 , 73 , p . 7 […]