Minerals & Gemstone 480x104
Minerals & Gemstone 480x104
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Golden Orange Sphene

The Gemstone Sphene




Sphene is the gemstone name of the mineral Titanite. Sphene is known for its exceptional dispersion, resulting in gemstones that show brilliant fire. The dispersion of Sphene exceeds even that of Diamond. However, the relatively low hardness of Sphene inhibits its use as a mainstream gemstone.
Chemical Formula CaTiSiO5
Color Green, Yellow, Orange, Brown
Hardness 5 - 5.5
Crystal System Monoclinic
Refractive Index 1.84 - 2.11
SG 3.4 - 3.6
Transparency Transparent
Double Refraction .100 - .192
Luster Adamantine
Cleavage 2,2
Mineral Class Titanite


Sphene AUCTIONS

ALL ABOUT
Sphene comes in several colors, but the most prevalent color used in gemstones is yellowish-green to orange-brown. Sphene is also strongly pleochroic, with different colors at different angles. Sphene gemstones often have inclusions and flaws, especially when in larger sizes. Clean Sphene gemstones are uncommon and are highly sought after.


USES
Sphene is a minor gemstone and used mainly for collectors. Since Sphene gemstones have a low hardness and are easily scratched, they are limited to earrings and pendants when used in jewelry.




Sphene TREATMENTS AND ENHANCEMENTS
Although the color of Sphene gemstones may be turned red or orange through heat treatment, most Sphene gemstones remain untreated.

Sphene SOURCES
Gem Sphene sources include Austria, Brazil, Pakistan, Namibia, Madagascar, Russia, and Sri Lanka.


SIMILAR GEMSTONES
Chrysoberyl, Beryl, Zircon, and Peridot all have a greater hardness. 


Sphene PHOTOS [Click photos for more details]

Sphene IN THE ROUGH PHOTOS [Click photos for more details]

 
ADDITIONAL RESOURCES
 
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