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Gemstone : Natural Paraiba Tourmaline
Shape : Oval
Color : Green
Origin : Nigeria
Treatment: Not Heated. Not Treated. Not Enhanced.
Tourmaline is a gemstone noted for the large and unsurpassed range of colors in which it occurs, and Paraiba tourmalines are precious stones displaying a uniqueness and splendor of those colors. Even among Paraiba tourmalines there is a broad spectrum of color.
Color: Vivid Blue, Vivid Green, Bluish Green, B...
Origin: Afghanistan, Brazil, East Africa, Nigeria, ...
Refractive Index: 1.624(+.005, -.005) - 1.644...