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Turquoise
Turquoise

Franklinite
Franklinite



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Turquoise
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Franklinite

Turquoise and Franklinite Optical Properties

Optical Properties

Luster

Waxy
-

Pleochroism

Weak
-

Dispersion

0.030.19
0.005 1
👆🏻

Transparency

Translucent, Opaque
Translucent

Refractive Index

1.610-1.650-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m

Birefringence

0.040-9999
0 0.296
👆🏻

Clarity

Translucent
Translucent

Turquoise and Franklinite Optic Character

Turquoise and Franklinite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Turquoise and Franklinite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Turquoise and Franklinite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Turquoise and Franklinite Transparency

Similar to their colors, Turquoise and Franklinite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Turquoise is Translucent and Opaque while Turquoise is Translucent and Opaque in appearance.