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4 Abduriyim, A. and Kitawaki, H. (2008) New geological origin: Ruby from Winza of Tanzania. <http://www.gaaj-zenhokyo.co.jp/researchroom/kanbetu/2008/2008_08en-01.html> GIT (The Gem and Jewelry Institute of Thailand) Gem testing Laboratory (2008) Ruby form a new deposit in Tanzania. GIT Lab Review, Issue 1, August 2008, pp. 1–6.

Hänni, H.A. (2008a) New rubies from central Tanzania. GIA Insider, May 2, 2008 Hänni, H.A. (2008b) New rubies from Tanzania . SSEF Swiss Gemmological Institute Newsletter, May 3, 2008.

Smith, C. (2006) Infrared Spectra of Gem Corundum. Gems & Gemology,Vol.42, No.3, p. 92

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Pardieu, V., Thanachakaphad, J., Jacquat, S., Senoble, J.B and Bryl, L.P (on-going research from March, 2009) Rubies from the Niassa and Cabo Delgado regions of Northern Mozambique: A preliminary examination with an updated Field Report An nex. <http://www.giathai.net/pdf/Niassa_Mozambique_Ruby_September13_2009.pdf>

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