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Topaz
Topaz

Quartz
Quartz



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Topaz
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Quartz

Topaz and Quartz Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Weak
0.01
Transparent
1.606-1.644
-
Orthorhombic
0.008-0.011
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous
None
0.01
Transparent, Translucent, Transparent to translucent
1.544-1.553
-
Trigonal
0.009
Opaque

Topaz and Quartz Optic Character

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

Topaz and Quartz Transparency

Similar to their colors, Topaz and Quartz 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, Topaz is while Topaz is in appearance.