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Dallasite
Dallasite

Topaz
Topaz



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Dallasite
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Topaz

Dallasite and Topaz Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Weak
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.01
Rank: 26 (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.540
1.606-1.644
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.008-0.010
0.008-0.011
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Dallasite and Topaz Optic Character

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

Similar to their colors, Dallasite and Topaz 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.