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Natrolite
Natrolite

Rubellite
Rubellite



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Natrolite
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Rubellite

Natrolite and Rubellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Silky, Pearly
Not Available
1.2 Pleochroism
NilArthur Thomas
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent, Translucent
1.5 Refractive Index
1.478-1.4931.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
0.012-0.0130.014-0.040
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Natrolite and Rubellite Optic Character

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

Similar to their colors, Natrolite and Rubellite 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.