Natural Sphene 2.5 ct Great Color Dispersion From Himalayan Range

2510

存貨單位
尺寸（毫米）: 9.900 x 9.900 x 4.100mm
重量 (cts): 2.575
Treatment: No Treatment
類型: Faceted
顏色

General Info:

A brilliantly transparent gem, sphene has fire greater than that of diamond! This gem is named from the Greek word for “wedge,” as its crystals are typically wedge shaped, but may be referred to by its mineral name, titanite. Another characteristic sphene possesses is birefringence, or double refraction, meaning that light splits into two rays as it passes through the gem. As a result, the back facets appear as double images, giving the gem a soft, hazy appearance, similar to the doubling seen in zircon.

Classification

Common Name: Sphene
Species Sphene
Variety
Colors Yellow, Green, Brown, Orange, Red
Alternate Names: Titanite, Chrome Sphene
Gemstone Groups
Key Separations: OTL RI reading, very strong eye visible doubling, possibly spectra
Comments Chrome sphene is intense green in color.

Sphene Chemistry and Crystallography:

Chemical Name: Calcium titanium silicate
Chemical Formula: CaTiSiO5
Synthesis
Crystal System: Monoclinic
Classification Silicate
Nature Natural
Crystallinity Crystalline
Sphene Physical properties:
Hardness 5-5.5
Streak White
Specific Gravity: 3.5-3.54 Typical:3.52
Toughness Varies
Inclusions Sphene occasionally contain tiny crystals that aline in straight rows or “feathers”, natural inclusions, actinolite needles and twinning is common. Stones have strong dispersion and eye-visible doubling.
Luster SubAdamantine
Stability
Fracture Conchoidal, Splintery
Cleavage Good, in one direction

Item Specifics:

ORIGIN PAKISTAN
TREATMENT NONE 100% NATURAL
COLOR GREEN MULTICOLOR SPARKLE

Feel free to to “make an offer” on our other items :)

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Direct Deposit
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存貨單位
尺寸（毫米）: 9.900 x 9.900 x 4.100 mm
重量 (cts): 2.575
Treatment: No Treatment
類型: Faceted
顏色

General Info:

Classification

Common Name: Sphene
Species Sphene
Variety
Colors Yellow, Green, Brown, Orange, Red
Alternate Names: Titanite, Chrome Sphene
Gemstone Groups
Key Separations: OTL RI reading, very strong eye visible doubling, possibly spectra
Comments Chrome sphene is intense green in color.

Sphene Chemistry and Crystallography:

Item Specifics:

ORIGIN PAKISTAN
TREATMENT NONE 100% NATURAL
COLOR GREEN MULTICOLOR SPARKLE

Feel free to to “make an offer” on our other items :)

We Accept Payments through

Paypal
Direct Deposit
Credit Cards

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Discover the brilliance of rare gemstones with Zayan Gems. Zayan Gems is a company that has been in the gemstone industry for 15 years, operating from Pakistan, Thailand, and Australia. They specialize in wholesaling both semi-precious and precious gemstones, in both cut and polished forms as well as rough specimens. The gemstones they source are exclusively from around the world, with a focus on Africa, Pakistan, Tajikstan, Afghanistan, and Kashmir. These areas are known for their high-quality gemstones and limited access, which allows Zayan Gems to offer their customers stones of "high to finest" quality at very attractive prices. The company's ties to these important mining and market environments are what sets them apart and allows them to offer such exceptional gemstones to their customers.

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