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Hemimorphite
Hemimorphite

Bertrandite
Bertrandite



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Hemimorphite
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Bertrandite

Hemimorphite and Bertrandite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine, Silky
Vitreous

Pleochroism

-
none.

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
TransparentAnthony et al

Refractive Index

1.614-1.6361.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

0.022-9999
0 0.296
👆🏻

Clarity

Transparent
TransparentAnthony et al

Hemimorphite and Bertrandite Optic Character

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

Hemimorphite and Bertrandite Transparency

Similar to their colors, Hemimorphite 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, Hemimorphite is Transparent and Translucent while Hemimorphite is Transparent and Translucent in appearance.