×

Alexandrite
Alexandrite

Axinite
Axinite



ADD
Compare
X
Alexandrite
X
Axinite

Alexandrite and Axinite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
Strong
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to nearly opaque
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.739-1.7701.656-1.704
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Biaxial/+
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.007-0.0100.009-0.012
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Alexandrite and Axinite Optic Character

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

Alexandrite and Axinite Transparency

Similar to their colors, Alexandrite and Axinite 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.