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Grandidierite
Grandidierite

Jet
Jet



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Grandidierite
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Jet

Grandidierite and Jet Optical Properties

Jet
Jet
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1 Optical Properties
1.1 Luster
Vitreous, Pearly
Waxy
1.2 Pleochroism
visible
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.578-1.6391.640-1.680
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Amorphous
1.8 Birefringence
0.037-0.039Not Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references

Grandidierite and Jet Optic Character

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

Grandidierite and Jet Transparency

Similar to their colors, Grandidierite and Jet 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, Grandidierite is Gemmological Tables (2004) More from other references while Grandidierite is Gemmological Tables (2004) More from other references in appearance.