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Baddeleyite
Baddeleyite

Alexandrite
Alexandrite



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Baddeleyite
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Alexandrite

Baddeleyite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous
1.2 Pleochroism
DistinctArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
2.13-2.201.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/c
Orthorhombic
1.8 Birefringence
0.070.007-0.010
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Baddeleyite and Alexandrite Optic Character

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

Baddeleyite and Alexandrite Transparency

Similar to their colors, Baddeleyite 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, Baddeleyite is Transparent while Baddeleyite is Transparent in appearance.