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Marialite
Marialite

Alexandrite
Alexandrite



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Marialite
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Alexandrite

Marialite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly, Resinous
Vitreous
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.540-1.5501.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
tetragonal
Orthorhombic
1.8 Birefringence
0.004-0.0080.007-0.010
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Marialite and Alexandrite Optic Character

Marialite and Alexandrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Marialite and Alexandrite 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 Marialite and Alexandrite 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. Alexandrite has Biaxial/+ character.

Marialite and Alexandrite Transparency

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