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Bytownite
Bytownite

Bertrandite
Bertrandite



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Bytownite
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Bertrandite

Bytownite and Bertrandite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
colorless.
none.
1.3 Dispersion
Albite Optical ..
0.01
Rank: 28 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.561-1.583
1.583-1.614
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
1.8 Birefringence
0.010-0.011
Not Available
1.9 Clarity
Transparent
TransparentAnthony et al

Bytownite and Bertrandite Optic Character

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

Bytownite and Bertrandite Transparency

Similar to their colors, Bytownite and Bertrandite 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, Bytownite is Transparent while Bytownite is Transparent in appearance.

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