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Anhydrite
Anhydrite

Pectolite
Pectolite



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Anhydrite
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Pectolite

Anhydrite and Pectolite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Pearly, Greasy
For violet varieties
0.01
Transparent
1.570-1.614
-
Orthorhombic
0.042-0.044
Transparent
 
Silky
-
0.01
Transparent
1.595-1.645
-
Triclinic
0.028-0.038
Transparent

Anhydrite and Pectolite Optic Character

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

Anhydrite and Pectolite Transparency

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