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Bertrandite
Bertrandite

Stolzite
Stolzite



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Bertrandite
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Stolzite

Bertrandite and Stolzite Optical Properties

Optical Properties

Luster

Vitreous
Resinous, Subadamantine

Pleochroism

none.
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

TransparentAnthony et al
-

Refractive Index

1.583-1.6142.180-2.190
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
tetragonal

Birefringence

-99990.090
0 0.296
👆🏻

Clarity

TransparentAnthony et al
-

Bertrandite and Stolzite Optic Character

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

Bertrandite and Stolzite Transparency

Similar to their colors, Bertrandite and Stolzite 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, Bertrandite is TransparentAnthony et al while Bertrandite is TransparentAnthony et al in appearance.