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Pectolite
Pectolite

Prasiolite
Prasiolite



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Pectolite
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Prasiolite

Pectolite and Prasiolite Optical Properties

Optical Properties

Luster

Silky
Vitreous

Pleochroism

-
Very weak: light green pale greenWalter Schumann

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.595-1.6451.544-1.553
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Trigonal

Birefringence

0.028-0.0380.009
0 0.296
👆🏻

Clarity

Transparent
Transparent

Pectolite and Prasiolite Optic Character

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

Similar to their colors, Pectolite and Prasiolite 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.