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Baddeleyite
Baddeleyite

Topaz
Topaz



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Baddeleyite
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Topaz

Baddeleyite and Topaz Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

DistinctArthur Thomas
Weak

Dispersion

0.040.01
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

2.13-2.201.606-1.644
1 3.25
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Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/c
Orthorhombic

Birefringence

0.070.008-0.011
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Baddeleyite and Topaz Optic Character

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

Baddeleyite and Topaz Transparency

Similar to their colors, Baddeleyite 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, Baddeleyite is Transparent while Baddeleyite is Transparent in appearance.