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Caledonite
Caledonite

Benitoite
Benitoite



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Caledonite
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Benitoite

Caledonite and Benitoite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
O = colorless; E = purple
1.3 Dispersion
NA0.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent
1.5 Refractive Index
1.818-1.9091.757-1.804
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Hexagonal
1.8 Birefringence
0.0910.047
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Caledonite and Benitoite Optic Character

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

Caledonite and Benitoite Transparency

Similar to their colors, Caledonite and Benitoite 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, Caledonite is Transparent while Caledonite is Transparent in appearance.