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3.5ct Sphene With Excellent Luster And Fine Cutting Gemstones
- SKU
- Dimensions (mm)
- 9.500 x 10.730 x 5.520mm
- Weight (cts)
- 3.500
- Certified Gemstones
- Yes
- Treatment
- No Treatment
- Type
- Faceted
- Shape
- Heart
- Colours
-
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:
TREATMENT NONE 100% NATURAL
COLOR GREEN MULTICOLOR SPARKLE
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- SKU
- Dimensions (mm)
- 9.500 x 10.730 x 5.520 mm
- Weight (cts)
- 3.500
- Certified Gemstones
- Yes
- Treatment
- No Treatment
- Type
- Faceted
- Shape
- Heart
- Colours
-
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:
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
Shipping provider | Shipping to Thailand | Shipping to rest of world |
---|---|---|
FedEx | $18.00 / 2 days | $35.00 / 8 days |
Thailand
FedEx is discounted to $18.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $35.00 on orders with 2 or more items
|
||
Express Shipping | $13.00 / 2 days | $17.99 / 7 days |
Thailand
Express Shipping is discounted to $13.00 on orders with 2 or more items
Rest of the world
Express Shipping is discounted to $17.99 on orders with 2 or more items
|
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Positive
Beautiful stone .
Audit
-
Description Accurate
-
Pictures Accurate
Comments
The Verified Seller has provided accurate and complete information for this item including weight, dimensions, and treatment.