×

Richterite
Richterite

Alexandrite
Alexandrite



ADD
Compare
X
Richterite
X
Alexandrite

Richterite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong: pale yellow
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.6151.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.0210.007-0.010
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Richterite and Alexandrite Optic Character

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

Richterite and Alexandrite Transparency

Similar to their colors, Richterite 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, Richterite is Not Available while Richterite is Not Available in appearance.