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Goshenite
Goshenite

Bertrandite
Bertrandite



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Goshenite
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Bertrandite

Goshenite and Bertrandite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
none.
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.562-1.6151.583-1.614
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
1.8 Birefringence
0.003-0.010Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentAnthony et al

Goshenite and Bertrandite Optic Character

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

Goshenite and Bertrandite Transparency

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