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Natrolite
Natrolite

Almandine
Almandine



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Natrolite
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Almandine

Natrolite and Almandine Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Silky, Pearly
Greasy, Vitreous
1.2 Pleochroism
NilArthur Thomas
None
1.3 Dispersion
NA0.03
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.478-1.4931.770-1.820
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
cubic
1.8 Birefringence
0.012-0.013Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Natrolite and Almandine Optic Character

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

Natrolite and Almandine Transparency

Similar to their colors, Natrolite and Almandine 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, Natrolite is Translucent and Transparent while Natrolite is Translucent and Transparent in appearance.