From loose gemstones to mineral specimens, expand your gemological education and explore your own gemstone journey.

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Artisan Collection of Brazil Jewelry

Bi-Color Gemstones

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Gemstone Information
Tourmaline
Gemopedia™

Once proposed to be the national gemstone of the United States, tourmaline is found all over the world and in a variety of colors. Tourmaline is the most colorful of all gemstones because, according to an ancient Egyptian legend, it passed through a rainbow on its journey to Earth and brought all of the colors of the rainbow with it. Tourmaline is a mineral group comprised of multiple species of complex borosilicates. Lovingly referred to by mineralogists as the garbage can mineral, its crystal structure allows for the incorporation of a wide range of elements, many of which cause the stunning color varieties and spectacular zoning of tourmaline, including copper, manganese, iron, and titanium. Major tourmaline species include liddicoatite, dravite, uvite, schorl, and elbaite.

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Loose Bi-Color Stones


Look unique when you wear beautiful bi-color gemstones. Choose from endless color combinations and styles in JTV's bi-color gemstone collection. Discover a bi-color Fluorite that ranges from pale blueish green to deep purple all in one stone. Feel as beautiful as a sunset when you wear an Ametrine ranging in color from pale pink to yellow to purple. With JTV's bi-color gemstone collection, you will always look and feel unique!

You might also be interested in: Black Gemstones

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