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Orbicular jasper
Orbicular jasper

Bertrandite
Bertrandite



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Orbicular jasper
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Bertrandite

Orbicular jasper and Bertrandite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
none.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
Not Available1.583-1.614
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentAnthony et al

Orbicular jasper and Bertrandite Optic Character

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

Orbicular jasper and Bertrandite Transparency

Similar to their colors, Orbicular jasper 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, Orbicular jasper is Not Available while Orbicular jasper is Not Available in appearance.