"amazonstone." Britannica School. Encyclopædia Britannica, Inc., 2014. Web. 5 Oct. 2014. http://school.eb.com/levels/high/article/6034

"Minerals.net." Amazonite: The Gemstone Amazonite Information and Pictures. N.p., n.d. Web. 05 Oct. 2014.

http://jearles.blogspot.com/2008/02/stone-of-week-amazonite-amazonstone.html

"Amazonite Gemstone Information." Amazonite Gemstone Information. N.p., n.d. Web. 05 Oct. 2014.

www.gemselect.com/gem-info/amazonite/amazonite-info.php

P. C. Rickwood (1981). "The largest crystals". American Mineralogist 66: 885–907.

Cans of Paint. Photograph. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014.

http://quest.eb.com/#/search/107_300919/1/107_300919/cite

Streak: Hematite and Malachite. Photography. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014.

http://quest.eb.com/#/search/139_1991899/1/139_1991899/cite

Amazonite. Photopgraphy. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014.

http://quest.eb.com/#/search/126_3756151/1/126_3756151/cite

 

Scales. Photograph. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014. 
http://quest.eb.com/#/search/118_812190/1/118_812190/cite

Knife. Photography. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014.

http://quest.eb.com/#/search/156_2398672/1/156_2398672/cite

Array of Necker cubes. Photography. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014.

http://quest.eb.com/#/search/132_1306852/1/132_1306852/cite

Warrington hammer.. Photograph. Encyclopædia Britannica ImageQuest. Web. 5 Oct 2014.

http://quest.eb.com/#/search/102_538446/1/102_538446/cite

Amazonite. Digital image. Http://www.jewellery-art.co.uk/amazonite-gemstone-meaning.html. N.p., n.d. Web. 6 Oct. 2014.

Statue of Liberty. Digital image.Http://en.wikipedia.org/wiki/Statue_of_Liberty_National_Monument. N.p., n.d. Web. 6 Oct. 2014.

Streak Plate. Digital image. Http://www.topgeo.com/streak-plate-white_9922.html. N.p., n.d. Web. 6 Oct. 2014.

Amazonite. Digital image. Http://www.natures-energies.com/metaphysics/amazonite. N.p., n.d. Web. 6 Oct. 2014.

Amazonite. Digital image.Http://www.gemselect.com/amazonite/amazonite-333875.php. N.p., n.d. Web. 6 Oct. 2014.

Amazonite. Digital image. Http://www.amazon.com/Russian-Amazonite-Gemstone-12-15mm-Faceted/dp/B00CDUYA2O. N.p., n.d. Web. 6 Oct. 2014.

Moh's Scale of Hardness. Digital image. Http://www.jewelry-secrets.com/Metals/Rockwell-Scale-vs-Mohs-Scale/Rockwell-Scale-versus-The-Mohs-Scale-of-Hardness.html. N.p., n.d. Web. 6 Oct. 2014.

Triclinic Crystal System. Digital image.Http://www.jewelinfo4u.com/What_is_Crystallography.aspx. N.p., n.d. Web. 6 Oct. 2014.

Amazonite. Digital image. Http://www.mysticmerchant.com/amazonite/. N.p., n.d. Web. 6 Oct. 2014.