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Turquoise
Turquoise

Garnet
Garnet



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Turquoise
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Garnet

Turquoise and Garnet Optical Properties

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Optical Properties

Luster

Waxy
Vitreous, Adamantine

Pleochroism

Weak
None

Dispersion

0.030.02
0.005 1
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Transparency

Translucent, Opaque
Transparent, Transparent to translucent

Refractive Index

1.610-1.6501.730-1.895
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
Trigonal

Birefringence

0.040-9999
0 0.296
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Clarity

Translucent
Transparent

Turquoise and Garnet Optic Character

Turquoise and Garnet optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Turquoise and Garnet 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 Garnet 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 Garnet Transparency

Similar to their colors, Turquoise and Garnet 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.