Rujukan Baiduri sepah

  1. ↑ "Tiger's Eye". mindat.org. Dicapai 16 May 2016. 
  2. ↑ Heaney, Peter; Fisher, Donald (April 2003). "New interpretation of the origin of tiger's-eye". Geology. 31 (4): 323–326. doi:10.1130/0091-7613(2003)031<0323:NIOTOO>2.0.CO;2. Dicapai 16 May 2016. 
  3. ↑ Listing of SG of gems and gem simulants Error in webarchive template: Check |url= value. Empty., Berkeley.edu
  4. ↑ Pietersite on Mindat.org
  5. ↑ Schumann, Walter (2009). Gemstones of the World (edisi Fourth). New York, New York: Sterling Publishing. m/s. 140. ISBN 978-1-4027-6829-3. 
  6. ↑ The Encyclopedia of SuperstitionsBy Richard Webster, p.257
  7. ↑ O'Donoghue, Michael (1997). Synthetic, Imitation, and Treated Gemstones. Boston, Massachusetts: Butterworth-Heinemann. m/s. 125–127. ISBN 0-7506-3173-2.