Characterization of a Synthetic Nano-Polycrystalline Diamond Gemstone.

Skalwold, E. A., Renfro, N., Shigley, J. E., & Breeding, C. M. (2012). Characterization of a Synthetic Nano-Polycrystalline Diamond Gemstone. Gems & Gemology, 48(3). Link to Article

Synthetic Emeralds Grown by Richard Nacken in The Mid-1920s: Properties, Growth Technique, and Historical Account

Schmetzer, K., Gilg, H. A., & Vaupel, E. (2016). SSynthetic Emeralds Grown by Richard Nacken in The Mid-1920s: Properties, Growth Technique, and Historical Account. Gems & Gemology, 52(4). Link to Article

Inclusions in Natural, Synthetic, and Treated Sapphire

Renfro, N. D., Koivula, J. I., Muyal, J., McClure, S. F., Schumacher, K., & Shigley, J. E. (2017). Inclusions in Natural, Synthetic, and Treated Sapphire. Link to Article

Inclusions in Natural, Synthetic, and Treated Emerald

Renfro, N. D., Koivula, J. I., Muyal, J., McClure, S. F., Schumacher, K., & Shigley, J. E. (2016). Inclusions in Natural, Synthetic, and Treated Emerald. Link to Article

Photoatlas of Gemstone Spectra for Gemmology Students

Mitchell, C. (2015). Photoatlas of Gemstone Spectra for Gemmology Students. The Journal of Gemmology, 34(6), 552.

Photoluminescence Mapping of Optical Defects in HPHT Synthetic Diamond

Loudin, L. C. (2017). Photoluminescence Mapping of Optical Defects in HPHT Synthetic Diamond. Gems & Gemology, 53(2). Link to Article

Amber: The organic gemstone

Lambert, Joseph B., & Poinar, George O. Jr. (2002). Amber: The organic gemstone. Accounts of Chemical Research, 35(8), 628. Link to Article

Cuprian Liddicoatite Tourmaline

Katsurada, Y., & Sun, Z. (2017). Cuprian Liddicoatite Tourmaline. GEMS & GEMOLOGY, 53(1), 34-41. Link to Article

Carbonado Diamond: A Review of Properties and Origin

Haggerty, S. E. (2017). Carbonado Diamond: A Review of Properties and Origin. Gems & Gemology, 53(2). Link to Article

Geology of Gem Deposits

Groat LA (ed) (2007) Geology of Gem Deposits. Mineralogical Association of Canada Short Course 37, 276 pp. Link to Article

Emerald deposits and occurrences

Groat, L. A., Giuliani, G., Marshall, D. D., & Turner, D. (2008). Emerald deposits and occurrences: A review. Ore Geology Reviews, 34(1), 87-112. Link to Article

"Gem formation, production, and exploration: Why gem deposits are rare and what is being done to find them."

Groat, Lee A., and Brendan M. Laurs. "Gem formation, production, and exploration: Why gem deposits are rare and what is being done to find them." Elements 5.3 (2009): 153-158. Link to Article

Optimizing Face-Up Appearance in Colored Gemstone Faceting

Gilbertson, A. (2013). Optimizing Face-Up Appearance in Colored Gemstone Faceting. Gems & Gemology, 49(2), 64-81. Link to Article

Characterization of Mg and Fe Contents in Nephrite Using Raman Spectroscopy

Feng, X., Zhang, Y., Lu, T., & Zhang, H. (2017). Characterization of Mg and Fe Contents in Nephrite Using Raman Spectroscopy. Gems & Gemology, 53(2).Link to Article

The Role of Silicon in the Color of Gem Corundum

Emmett, J. L., Stone-Sundberg, J., Guan, Y., & Sun, Z. (2017). The Role of Silicon in the Color of Gem Corundum. Gems & Gemology, 53(1). Link to Article

An Introduction to Photoluminescence Spectroscopy for Diamond and its Applications in Gemology

Eaton-Magaña, S., & Breeding, C. M. (2016). An Introduction to Photoluminescence Spectroscopy for Diamond and its Applications in Gemology . Gems & Gemology, 52(1). Link to Article

Applications of geophysics in gemstone exploration

Cook, F. A. (1997). Applications of geophysics in gemstone exploration. Gems and Gemology, 33(1), 4-23. Link to Article

A New Find of Danburite in the Luc Yen Mining Area, Vietnam

Huong, L. T. T., Otter, L. M., Häger, T., Ullmann, T., Hofmeister, W., Weis, U., & Jochum, K. P. (2016). A New Find of Danburite in the Luc Yen Mining Area, Vietnam. Gems & Gemology, 52(4). Link to Article

Big Sky Country Sapphire

Hsu, T., Lucas, A., Kane, R. E., McClure, S. & Renfro, N. (2017) Big Sky Country Sapphire: Visiting Montana’s Alluvial Deposits. Gems & Gemology, 53(2). Link to Article

Geology and Development of the Lomonosov Diamond Deposit, Northwestern Russia

Smit, K. V., & Shor, R. (2017). Geology and Development of the Lomonosov Diamond Deposit, Northwestern Russia Gems & Gemology, 53(2). Link to Article