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Pectolite
Pectolite

Topaz
Topaz



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Pectolite
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Topaz

Pectolite and Topaz Optical Properties

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Optical Properties

Luster

Silky
Vitreous

Pleochroism

-
Weak

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.595-1.6451.606-1.644
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
Orthorhombic

Birefringence

0.028-0.0380.008-0.011
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Pectolite and Topaz Optic Character

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

Pectolite and Topaz Transparency

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