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Anhydrite
Anhydrite

Calcite
Calcite



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Anhydrite
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Calcite

Anhydrite and Calcite Optical Properties

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1 Optical Properties
1.1 Luster
Pearly, Greasy
Vitreous, Pearly
1.2 Pleochroism
For violet varieties
NilArthur Thomas
1.3 Dispersion
Albite Optical ..
0.01
Rank: 27 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.570-1.614
1.486-1.658
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.042-0.044
0.154-0.174
1.9 Clarity
Transparent
Transparent

Anhydrite and Calcite Optic Character

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

Similar to their colors, Anhydrite and Calcite 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.