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Alexandrite
Alexandrite

Ajoite
Ajoite



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Alexandrite
X
Ajoite

Alexandrite and Ajoite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
X: very light bluish green; Y and Z: brilliant bluish green
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to nearly opaque
Not Available
1.5 Refractive Index
1.739-1.7701.550
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.007-0.0100.091
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Alexandrite and Ajoite Optic Character

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

Similar to their colors, Alexandrite and Ajoite 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.