Tanzanite Oval Cabochon

This oval cabochon displays the blue-violet hue that makes tanzanite a sought-after gemstone for jewelry designs of all types. Mount this cabochon in a white-metal setting, or in yellow gold—it pairs well with both. Tanzanite is one of the birthstones for December. Tanzanite, a name first used by Tiffany & Co., is a blue/purple variety of zoisite, which is a trichroic gemstone—it often exhibits different colors when seen from different directions. These gemstones are cut to show the orientation of deep blue to violet-blue colors; the blue color is due to the traces of vanadium in the crystal structure.

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Gemstone type: Tanzanite
Stone shape: Oval
Stone size: 10 x 8mm, 8 x 6mm
Stone type: Natural
Color: Medium Blue-Violet
Birthstone: December
Enhancement: Heat-treated (H)
Mohs hardness: 6.5–7
Refractive index: 1.691–1.7
Specific gravity: 3.35
Brand: AGTA
Mineral source: TANZANIA
Cutting center: Thailand