1. Margaret Ann Lembo. "The Essential Guide to Crystals, Minerals and Stones". Llewellyn Publications 1st edition April 8, 2013
  2. Scott Cunningham. "Cunningham's Encyclopedia of Crystal, Gem & Metal Magic" (Cunningham's Encyclopedia Series). Llewellyn Publications 2nd edition 1998
  3. Ember Grant. "The Book of Crystal Spells: Magical Uses for Stones, Crystals, Minerals ... and Even Sand". Llewellyn Publications June 8, 2013
  4. Cassandra Eason. "Crystals for Love & Relationships: Your Guide to 100 Crystals and Their Mystic Powers". Carlton Books February 4, 2014
  5. Cassandra Eason. "The Complete Crystal Handbook: Your Guide to More than 500 Crystals". Sterling September 7, 2010
  6. Ember Grant. "The Second Book of Crystal Spells: More Magical Uses for Stones, Crystals, Minerals... and Even Salt". Llewellyn Publications June 8, 2016