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Natrolite
Natrolite

Malachite
Malachite



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Natrolite
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Malachite

Natrolite and Malachite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Silky, Pearly
Adamantine, Vitreous, Silky, Fibrous
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Opaque
1.5 Refractive Index
1.478-1.4931.655-1.909
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.012-0.0130.254
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Natrolite and Malachite Optic Character

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

Natrolite and Malachite Transparency

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