3.10 Carats AAA Fire Natural Sphene Gemstones

Item Information

Dimensions (mm) 10.1 x 7.2 x 5mm
Weight (carats) 3.1 carats
Colors
No Treatment

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

$400.00 USD

$600.00 SAVE $200
Add to Cart Make an Offer
Shipping $10.00
21 Days via Standard Shipping - Tracked
Add to Watch List Ask a Question * All prices in USD

Audit Information

The Gemstone Sheriff program allows our members to request an audit on any auction, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Request Audit

Pricing & Details

Auction ID 839052
Watchers 1 watching
Viewed 259 times
Starts 27th Nov 2018 10:08am PST

Shipping & Insurance

Provider Shipping Transit
DHL $24.00 12 Days
Registered Shipping $10.00 21 Days
Standard Shipping - Tracked $10.00 21 Days
Shipping Insurance all providers $0.00 (optional)

About Menschjewellery