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Alexandrite
Alexandrite

Moss Agate
Moss Agate



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Alexandrite
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Moss Agate

Alexandrite and Moss Agate Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to nearly opaque
TranslucentWalter Schumann, Gemstones of the world (2001)
1.5 Refractive Index
1.739-1.7701.530-1.540
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
0.007-0.0100.004
Achroite
0 0.296
1.9 Clarity
Transparent
TranslucentWalter Schumann

Alexandrite and Moss Agate Optic Character

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

Alexandrite and Moss Agate Transparency

Similar to their colors, Alexandrite and Moss Agate 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, Alexandrite is Transparent and Transparent to nearly opaque while Alexandrite is Transparent and Transparent to nearly opaque in appearance.