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SPHENE COLOR CHANGE 2.29 Cts NATURAL SRI LANKA LOOSE ENGAGEMENT GEMSTONE - 20658
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SPHENE COLOR CHANGE 2.29 Cts NATURAL SRI LANKA LOOSE ENGAGEMENT GEMSTONE - 20658

Product Code:20658
Availability: In Stock
  • $99.00

Carats 2.29
Size 9.2 x 7.9 mm
Color Golden Brown Red
Clarity VC
Shape Pear
Treatment None
Origin Sri Lanka
Location Colombo, Sri Lankan
Price $ 99.00
100% Natural - Not treated in any way.
Beautiful Center-stone for an engagement Ring.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Gem with High Lustre and Good Clarity.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.

Chemical Formula CaTiSiO5 - Mineral Class : Titanite
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

Sphene is a very rare brilliant yellowish - green, green, orange or brown gemstone with a high luster, also known as “ titanite ” due to its titanium content. The name “sphene” comes from the Greek word,” sphen ” meaning ”wedge ”which alludes to the formation of Its crystals.
Sphene occurs as an accessory mineral in igneous rocks: in schists, gneisses and other metamorphic rocks,and is also found as a detrital mineral in some sedimentary deposits.
Titanite is an important collector’s mineral, with well-formed crystals and transparent varieties being particularly desirable.it is also used as a minor gemstone. Titanite is industrially important as a source of titanium dioxide , (TiO2) , Which is used in pigments


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