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White topaz
White topaz

Sillimanite
Sillimanite



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White topaz
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Sillimanite

White topaz and Sillimanite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Subadamantine, Silky
1.2 Pleochroism
Not Available
Colourless to pale brown to yellow
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Translucent
1.5 Refractive Index
Not Available1.653-1.685
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available0.020-0.022
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

White topaz and Sillimanite Optic Character

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

White topaz and Sillimanite Transparency

Similar to their colors, White topaz and Sillimanite 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, White topaz is Not Available while White topaz is Not Available in appearance.