Gems and Minerals from the Sub-Arctic
Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
Abstracts; Summer 1991
From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Aquamarine with Unusually Strong Dichroism
This aquamarine's most striking feature was its unusually strong dichroism, displaying very deep blue and pale bluish green colours.
Aquamarine from the Masino-Bregaglia Massif, Central Alps, Italy
Aquamarine from granitic pegmatites of the Masino-Bregaglia Massif, Central Alps, Italy.