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- "Aussie Sapphires." "Cash and Treasures." Kirsten Gum. Travel Channel. June 4, 2008.
- Cook, David and Wendy Kirk. "Kingfisher Field Guide to Rocks and Minerals of the World." Kingfisher Books Ltd. November 1991.
- Hochleitner, Rupert. "Minerals." Barron's Educational Series First English Language Edition. March 1, 1994.
- Krause, Barry. "Mineral Collector's Handbook." Sterling Pub Co. Inc., New Edition. August 1998.
- "Meet Marvin Culver." Cash and Treasures. Travel Channel Web site. http://www.travelchannel.com/TV_Shows/Cash_and_Treasures/ci.Meet_Marvin_Culver.show ?vgnextfmt=show&idLink=bcb877ea1e647110VgnVCM100000698b3a0a