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Calcite
Calcite

Pearl
Pearl



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Calcite
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Pearl

Calcite and Pearl Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Pearly

Pleochroism

-
-

Dispersion

0.150.03
0.005 1
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Transparency

Transparent, Translucent
Translucent, Opaque

Refractive Index

1.486-1.6581.52-1.66
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.154-0.1740.156
0 0.296
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Clarity

Transparent
Translucent

Calcite and Pearl Optic Character

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

Calcite and Pearl Transparency

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