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Almandine
Almandine

Malachite
Malachite



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Almandine
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Malachite

Almandine and Malachite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Adamantine, Vitreous, Silky, Fibrous
1.2 Pleochroism
None
Not Available
1.3 Dispersion
0.03None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Opaque
1.5 Refractive Index
1.770-1.8201.655-1.909
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
monoclinic
1.8 Birefringence
Not Available0.254
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Gemmological Tables (2004) More from other references

Almandine and Malachite Optic Character

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

Almandine and Malachite Transparency

Similar to their colors, Almandine 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, Almandine is Gemmological Tables (2004) More from other references while Almandine is Gemmological Tables (2004) More from other references in appearance.