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Magnesite
Magnesite

Alexandrite
Alexandrite



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Magnesite
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Alexandrite

Magnesite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.509-1.7201.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.1910.007-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Magnesite and Alexandrite Optic Character

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

Magnesite and Alexandrite Transparency

Similar to their colors, Magnesite 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, Magnesite is Translucent while Magnesite is Translucent in appearance.