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Viking explorers used thin pieces of Iolite as the world’s first polarizing lens to help them determine the exact location of the sun for navigation
deep-blue copper mineral produced by weathering of copper ore deposits
Ancient Cellar Red Agate is a natural agate that is dyed and heated to give it the unique color and pattern we call Ancient Cellar
there may not be a more beautiful blue-and-brown combination than that of Terra Agate
Mined in Australia
Black Mica 10mm Round A Grade - 15-16 Inch 1.7mm Viking explorers used thin piecesMica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals, known as sheet silicates because they form in distinct layers. Micas are fairly light and relatively soft, and the sheets and flakes of mica are flexible. Mica is heat resistant and does not conduct electricity. There are 37 different mica minerals. The most common include: purple lepidolite, black biotite, brown phlogopite