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Kunzite
Kunzite

Bertrandite
Bertrandite



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Kunzite
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Bertrandite

Kunzite and Bertrandite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli
none.
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.657-1.6811.583-1.614
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
1.8 Birefringence
0.014-0.016Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentAnthony et al

Kunzite and Bertrandite Optic Character

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

Kunzite and Bertrandite Transparency

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