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The Secrets of Volcanic Rock
Volcanic rock as a mineral resource is decidedly short on glamour. Most of the billions of tonnes that are quarried worldwide each year go...
Borax & the Borate Minerals
Borax is perhaps the best-known of the borates, a group of 45 boron-containing minerals that are a subclass of the carbonate mineral group. Borates...
Hematite Stone: Rock Science
Hematite is the Earth’s greatest natural pigment, the primary ore of iron and a minor gemstone. It was also a key player in the...
What are Minerals? Names & Numbers
What are minerals? A few hours at a mineralogical museum or a rock and gem show will make it clear there are lots of...
Susan Margolis: 40 Years of Carved Gemstones
Susan Margolis, award-winning artist and gemstone carver, reflects on an extraordinary 40-year sculptural and industrial design background, which permeates and shines through her powerful carvings....
