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Locations: |
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Brazil, Madagascar,
Pakistan |
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| Colors
Found: |
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| Family: |
Sphene |
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Hardness: |
5.50 |
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Refractive Index: |
1.89 - 2.05 |
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Relative Density: |
3.40 - 3.56 |
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Sphene is named after the Greek word for wedge, because its crystals are
typically wedge shaped. As it contains titanium, Sphene is also
sometimes referred to by its mineral name Titanite.
One of the world's newest and rarest gems, Sphene possesses the rather
unusual ability to take a beam of light and break it into all of the
spectral colors. A feature gemologically referred to as fire or
dispersion. In this regard Sphene is superior to Diamond. This combined
with its strong pleochroism (different colors are displayed when the
gemstone is viewed from different angles) has the effect of making the
gem appear to change color. Occasionally pink, black or chocolate, most
Sphene is predominantly green or yellowish-green, with just about every
other color of the rainbow displayed by its intense fiery brilliance.

Sphene makes gorgeously brilliant, fiery gems that have a higher
dispersion (fire) than Diamonds.
Sphene's magnificent fire, unique color shades, strong pleochroism,
adamantine (Diamond like) luster and double refraction (birefringence)
make it ideal for earrings and pendants that catch the light, displaying
its sparkling qualities to full effect. A unique characteristic of
Sphene is birefringence (doubly refractive), meaning that light splits
into two rays as it passes through the gem. As a result, the back facets
appear as double images giving it a beautiful soft hazy appearance
similar to the doubling seen in Zircon.
If well polished the luster can approach or equal that of Diamond, but
Sphene is notoriously difficult to polish well. A well polished Sphene
is testament to an experienced jeweler. The cutters at GemsTV always
take great care to ensure that our Sphene is finished in a manner that
maximizes its intense natural beauty.
Clean Sphene larger than a few carats is extremely scarce.
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