Definition of tourmaline
: a mineral of variable color that consists of a complex borosilicate and is valued as a gem when transparent and cut
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Recent Examples of tourmaline from the Web
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There’s power behind pairing different gemstones, too: Novick explains how pink and green tourmaline complement each other and coordinate with the Heart Chakra.
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And cobalt and copper mines in the country’s Katanga region are rich in minerals like tourmaline, amethyst, citrine, blue and smoky quartz—all coveted by healing crystal sellers.
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Don your fox fur, snake skin, eagle feathers, gold, silver and tourmaline.
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Jacquie Aiche’s store in Los Angeles is full of jewelry items made from delicate raw quartz, tourmaline, moonstone, and countless other special stones.
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Inexpensive gemstones with a tint include morganites, aquamarines, amethysts, tourmaline, and citrine stones.
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Multiple translucent crystals fit the bill, namely calcite, cordierite and tourmaline.
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No calcite, cordierite, or tourmaline crystal has turned up at a Viking archaeological site so far.
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All three types of crystals that the team studied—calcite, a form of calcium carbonate; cordierite, an iron- and magnesium-rich silicate; and tourmaline, a boron-rich silicate—worked well at intervals of 3 hours or less.
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Origin and Etymology of tourmaline
Sinhalese toramalli carnelian
Learn More about tourmaline
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See words that rhyme with tourmaline Britannica.com: Encyclopedia article about tourmaline
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