Home
Gemstones


Hodgkinsonite and Alexandrite Optical Properties


Alexandrite and Hodgkinsonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Lavender and pale purple for transparent pink stones.Michael O’Donoghue   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gems   
Transparent, Transparent to nearly opaque   

Refractive Index
1.720-1.746   
1.739-1.770   

Optic Character
Not Available   
Biaxial/+   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
0.026   
0.007-0.010   

Clarity
Gems   
Transparent   

Benefits >>
<< Physical Properties

Hodgkinsonite and Alexandrite Optic Character

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

Compare Violet Gemstones

Hodgkinsonite and Alexandrite Transparency

Similar to their colors, Hodgkinsonite 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, Hodgkinsonite is Gems while Hodgkinsonite is Gems in appearance.

Violet Gemstones

Violet Gemstones


Compare Violet Gemstones