Geology Fundamentals: Metamorphic Rocks
There are three types of rocks: igneous, metamorphic, and sedimentary. This article is the second in our series on the …
Tanzanite: A Rare Blue Beauty
Tanzanite is one of the most desirable gemstones today. Even though tanzanite is a newly-discovered mineral, it rivals the big four …
Gemstone Commodity Overview
Gemstones have enchanted humans since ancient times. Gems were believed to be gifts of gods, miracles of nature or stars …
Emerald Heart of Africa: The Kagem Mine, Kafubu Mining Area, Zambia
The Kafubu Mining Area is one of the largest suppliers of gem-quality emeralds in the world, second to Colombia. Located …
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Pegmatites – Our Greatest Source of Gemstones
Pegmatites are the major source of gem-quality minerals throughout the world. They typically host perfectly clear topazes, tourmalines, beryls and …
