Useful Visual Clue Indicating Corundum Heat Treatment by Koivula, John I.

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THE Microworld of DIAMONDS Images from Earth's Mantle by Koivula, John I, Skalwold, Elise A

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Micro-Features of Tourmaline by Renfro, Nathan, Smith, Tyler, Koivula, John I., McClure, Shane F., Shigley, James E.

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Micro-Features of Beryl by Renfro, Nathan, Smith, Tyler, Koivula, John I., McClure, Shane F., Schumacher, Kevin, Shigley, James E.

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Micro-Features of Spinel by Renfro, Nathan D., Koivula, John I., McClure, Shane F., Schumacher, Kevin, Shigley, James E.

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Inclusions in Natural, Treated, Synthetic, and Imitation Opal by Renfro, Nathan D., Koivula, John I., Muyal, Jonathan, McClure, Shane F., Schumacher, Kevin, Shigley, James E.

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Inclusions in Natural, Synthetic, and Treated Diamond by Renfro, Nathan D., Koivula, John I., Muyal, Jonathan, McClure, Shane F., Schumacher, Kevin, Shigley, James E.

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Inclusions in Natural, Synthetic, and Treated Ruby by Renfro, Nathan D., Koivula, John I., Muyal, Jonathan, McClure, Shane F., Schumacher, Kevin, Shigley, James E.

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Observation of etch channels in several natural diamonds by Lu, Taijin, Shigley, James E., Koivula, John I., Reinitz, Ilene M.

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Inclusions in Natural, Synthetic, and Treated Sapphire by Renfro, Nathan D., Koivula, John I., Muyal, Jonathan, McClure, Shane F., Schumacher, Kevin, Shigley, James E.

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The Microworld of Diamonds: Images from Earth's Mantle: The heart of a diamond reflects the beauty of nature by Koivula, John I., Skalwold, Elise A.

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Synthetic Gem Materials and Simulants in the 1990s by Koivula, John I., Tannous, Maha, Schmetzer, Karl

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Identification of Extraterrestrial Peridot by Trace Elements by Shen, Andy H., Koivula, John I., Shigley, James E.

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Synthetic Gem Materials in the 2000s: A Decade in Review by Renfro, Nathan, Koivula, John I., Wang, Wuyi, Roskin, Gary

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Collecting tales from Brazil Part 2 by Smith, Arthur E.

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Lab Notes

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Solution-Generated Pink Color Surrounding Growth Tubes and Cracks in Blue to Blue-Green Copper-Bearing Tourmalines from Mozambique by Koivula, John I., Nagle, Kevin, Shen, Andy Hsi-Tien, Owens, Philip

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Photomicrography for Gemologists by Koivula, John I.

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Emeralds from the Kafubu Area, Zambia by (Hanco) Zwaan, J. C., Seifert, Antonín V., Vrána, Stanislav, Laurs, Brendan M., Anckar, Björn, (Skip) Simmons, William B., Falster, Alexander U., Lustenhouwer, Wim J., Muhlmeister, Sam, Koivula, John I., Garcia-Guillerminet, Héja

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Thermal Alteration of Inclusions in "Rutilated" Topaz by Kammerling, Robert C., Koivula, John I.

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