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Bertrandite
Bertrandite

Cerussite
Cerussite



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Bertrandite
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Cerussite

Bertrandite and Cerussite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Adamantine, Vitreous, Resinous
1.2 Pleochroism
none.
AbsentWalter Schumann
1.2 Dispersion
NA0.06
Fluorite Optical Properties
0.007 1
1.14 Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Transparent, Translucent
1.15 Refractive Index
1.583-1.6141.803-2.078
Agate Opal
1 3.25
1.16 Optic Character
Not Available
Not Available
1.17 Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
Orthorhombic
1.18 Birefringence
Not Available0.273
Achroite
0 0.296
1.19 Clarity
TransparentAnthony et al
Transparent

Bertrandite and Cerussite Optic Character

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

Similar to their colors, Bertrandite and Cerussite 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 Handbook of mineralogy (2001) and TransparentAnthony et al while Bertrandite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.