Etch Pits in Heliodor and Green Beryl from the Volyn Pegmatites, Northwest Ukraine: A Diagnostic Feature
Gerhard Franz, Oleksii A. Vyshnevskyi, Volodymyr M. Khomenko, Peter Lyckberg, and Ulrich Gernert, November 3, 2023
Examines dissolution features of heliodor and green beryl from a Ukrainian pegmatite field and offers criteria to distinguish them from samples found in other localities.
Read More
Diamond with Cavities Showing Radiation Evidence
Sally Eaton-Magaña and Garrett McElhenny, July 22, 2020
Diamond formed at incredible depth shows evidence of radioactive fluids in cavities surrounded by green fluorescence halos.
Read More
Hackmanite/Sodalite from Myanmar and Afghanistan
David Kondo and Donna Beaton, May 15, 2009
Significant amounts of gem-quality sodalite/hackmanite—some unusually transparent—have been produced.
Read More
Hidden Gems at the San Diego Natural History Museum
Erica Zaidman, November 11, 2022
Each level of the vertical Hidden Gems exhibit offers a different theme at the San Diego Natural History Museum.
Read More
The Year of Mineralogy at the Perot Museum
Erica Zaidman, November 11, 2022
The Perot Museum of Nature and Science promotes public interest in mineral studies with The Year of Mineralogy exhibit.
Read More
Article
Postdoctoral Program Gives Scientists Access to Rare Research Opportunities
Amanda J. Luke, November 16, 2016
GIA’s postdoctoral program gives researchers access to gemological data, equipment and rare, unusual and large gems in its laboratories.
Read More
The Shape of Ekanite
Lutz Nasdala, K.A. Geeth Sameera, G.W.A. Rohan Fernando, Manfred Wildner, Chutimun Chanmuang N., Gerlinde Habler, Annalena Erlacher, and Radek Škoda, August 23, 2022
Discusses the unusual surface characteristics of ekanite from secondary deposits in Sri Lanka.
Read More
The Discovery of Davemaoite, the CaSiO3 Perovskite, in a Diamond from Earth’s Lower Mantle
George R. Rossman and Oliver Tschauner, May 13, 2022
Davemaoite identified in a diamond from Orapa, Botswana.
Read More
Gem Topaz from the Schneckenstein Crag, Saxony, Germany: Mineralogical Characterization and Luminescence
Manuela Zeug, Lutz Nasdala, Chutimun Chanmuang N., and Christoph Hauzenberger, May 13, 2022
Characterizes yellow topaz from this historical source, with particular emphasis on its photoluminescence behavior.
Read More
First Identification of Sudoite in Caribbean Ceramic-Age Lapidary Craftsmanship
Alain Queffelec, Ludovic Bellot-Gurlet, Eddy Foy, Yannick Lefrais, and Emmanuel Fritsch, November 10, 2021
Extensive analysis of early beads and pendants from archaeological sites in the French islands of the Lesser Antilles identified the objects as sudoite, which has never before been documented in any lapidary production.
Read More