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Carletonite
Carletonite

Alexandrite
Alexandrite



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Carletonite
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Alexandrite

Carletonite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.517-1.5211.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
tetragonal
Orthorhombic
1.8 Birefringence
0.0040.007-0.010
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Carletonite and Alexandrite Optic Character

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

Carletonite and Alexandrite Transparency

Similar to their colors, Carletonite 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, Carletonite is Gemmological Tables (2004) More from other references while Carletonite is Gemmological Tables (2004) More from other references in appearance.