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Pectolite
Pectolite

Sunstone
Sunstone



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Pectolite
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Sunstone

Pectolite and Sunstone Optical Properties

Optical Properties

Luster

Silky
Vitreous

Pleochroism

-
Weak or absentWalter Schumann

Dispersion

0.010.01
0.005 1
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Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.595-1.6451.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
Triclinic

Birefringence

0.028-0.0380.007-0.010
0 0.296
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Clarity

Transparent
Transparent to translucent

Pectolite and Sunstone Optic Character

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

Similar to their colors, Pectolite and Sunstone 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.