×

Pearl
Pearl

Topaz
Topaz



ADD
Compare
X
Pearl
X
Topaz

Pearl and Topaz Optical Properties

Add ⊕

Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
Weak

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Translucent, Opaque
Transparent

Refractive Index

1.52-1.661.606-1.644
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.1560.008-0.011
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Pearl and Topaz Optic Character

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

Pearl and Topaz Transparency

Similar to their colors, Pearl 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, Pearl is Translucent and Opaque while Pearl is Translucent and Opaque in appearance.