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Anhydrite
Anhydrite

Topaz
Topaz



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Anhydrite
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Topaz

Anhydrite and Topaz Optical Properties

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1 Optical Properties
1.1 Luster
Pearly, Greasy
Vitreous
1.2 Pleochroism
For violet varieties
Weak
1.3 Dispersion
0.010.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent
1.5 Refractive Index
1.570-1.6141.606-1.644
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.042-0.0440.008-0.011
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Anhydrite and Topaz Optic Character

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

Anhydrite and Topaz Transparency

Similar to their colors, Anhydrite and Topaz 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, Anhydrite is Transparent while Anhydrite is Transparent in appearance.