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$50.00 USD
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Closed
05/10/2021 08:33 am

0.40 Carats Top Fire Natural Sphene Gemstones

SKU
Dimensions (mm)
5.490 x 5.070 x 2.790mm
Weight (cts)
0.400
Type
Faceted
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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Rest of the world
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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

menschjewellery
menschjewellery
Bangrak, Thailand
Verified
1609 Feedback

  • ronniethm
    ronniethm
    Positive

    the actual piece's lusters is very similar to the photos and video but the color is lighter than my expectation. Anyway, I will be buying from them again in the near future.

Audit

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

Shipping Details

Shipping:
$17.99 7 days via Express Shipping
Ships from:
Thailand

Payment Options

  • paypal

Overview

Listing Type : Standard
Product ID : 893075
Starts : 28th September 2021 02:55 pm PDT
* All prices are in USD