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Aventurine
Aventurine

Thulite
Thulite



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Aventurine
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Thulite

Aventurine and Thulite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Present

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent, Opaque . May be translucent when backlit on the edges.
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.544-1.5531.695
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.007-0.0100.006-0.018
0 0.296
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Clarity

Translucent
OpaqueHerve Nicolas Lazzarelli

Aventurine and Thulite Optic Character

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

Aventurine and Thulite Transparency

Similar to their colors, Aventurine and Thulite 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, Aventurine is Translucent and Opaque . May be translucent when backlit on the edges. while Aventurine is Translucent and Opaque . May be translucent when backlit on the edges. in appearance.