Photoluminescence Spectra of Emeralds from Colombia, Afghanistan and Zambia
D. Brian Thompson, Christian J. Bayens, Matthew B. Morgan, Taylor J. Myrick, and Nealey E. Sims, November 8, 2017
Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
Gems and Minerals from the Sub-Arctic
Sharon Bohannon, March 17, 2017
Circumnavigate the boreal reaches of the globe to explore gems from polar regions.