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Jet
Jet

Rock Crystal
Rock Crystal



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Jet
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Rock Crystal

Jet and Rock Crystal Optical Properties

Jet
Jet
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1 Optical Properties
1.1 Luster
Waxy
Not Available
1.2 Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
1.3 Dispersion
None0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.640-1.6801.544-1.553
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Amorphous
Not Available
1.8 Birefringence
Not Available0.009
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
TransparentWalter Schumann

Jet and Rock Crystal Optic Character

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

Jet and Rock Crystal Transparency

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