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Dallasite
Dallasite

Jet
Jet



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Dallasite
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Jet

Dallasite and Jet Optical Properties

Jet
Jet
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1 Optical Properties
1.1 Luster
Not Available
Waxy
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.5401.640-1.680
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Amorphous
1.8 Birefringence
0.008-0.010Not Available
Achroite
0 0.296
1.9 Clarity
Not Available
Gemmological Tables (2004) More from other references

Dallasite and Jet Optic Character

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

Dallasite and Jet Transparency

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