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Anhydrite
Anhydrite

Malachite
Malachite



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Anhydrite
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Malachite

Anhydrite and Malachite Optical Properties

1 Optical Properties
1.1 Luster
Pearly, Greasy
Adamantine, Vitreous, Silky, Fibrous
1.2 Pleochroism
For violet varieties
Not Available
1.3 Dispersion
0.01None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Opaque
1.5 Refractive Index
1.570-1.6141.655-1.909
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.042-0.0440.254
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Anhydrite and Malachite Optic Character

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

Similar to their colors, Anhydrite and Malachite 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.