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.
Green, Yellow, Orange, Brown
5 - 5.5
1.84 - 2.11
.100 - .192
3.4 - 3.6
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 inclusion
s and flaw
s, especially when in larger sizes. Clean Sphene gemstones are uncommon and are highly sought after.
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.
Treatments & Enhancements
Although the color of Sphene gemstones may be turned red or orange through heat treatment
, most Sphene gemstones remain untreated.
Gem Sphene sources include Austria, Brazil, Pakistan, Namibia, Madagascar, Russia, and Sri Lanka.
Chrysoberyl, Beryl, Zircon, and Peridot
all have a greater hardness.
Sphene in the Rough Photos