Triphane

saf-ahyuh r

The term triphane originated as another name for spodumene, but more recently has been used in reference to colorless to light yellow transparent spodumene. Triphane's name is derived from a Greek term meaning 'three aspects', due to its distinctive trichroism.

Triphane Polished
Triphane Classification
Common Name Triphane
Species Spodumene
Triphane Optical Properties
Transparency Transparent
Dispersion Strength: Weak Fire Value: 0.017
Refractive Index 1.660-1.676
Tolerance:(+0.005/-0.005)
Birefringence 0.014-0.016
Optic Character Biaxial
Optic Sign Positive
Polariscope Reaction Doubly Refractive (DR)
Fluorescence SWUV: Inert
LWUV: Inert
Triphane Characteristic Physical Properties
Hardness 6.5-7
Streak White
Specific Gravity 3.150-3.210 Typical:3.180
Toughness Poor
Inclusions Triphane is a type I clarity stone. Stones might contain growth and etch tubes, healing cracks, liquid and multi-phase inclusions.
Luster Vitreous
Fracture Uneven, Splintery
Cleavage Perfect, in two directions
Triphane Chemistry & Crystallography
Chemical Name lithium aluminum silicate
Chemical Formula LiAlSi2O6
Crystal System Monoclinic
Chemistry Classification Silicate

Triphane Colors

  • Colorless Triphane Colorless

Alternate Names

Teradora(TM)

Countries of Origin

Afghanistan; United States of America (the); Brazil

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Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.