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Pectolite
Pectolite

Atacamite
Atacamite



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X
Pectolite
X
Atacamite

Pectolite and Atacamite Optical Properties

Optical Properties

Luster

Silky
Adamantine, Vitreous

Pleochroism

-
X = pale green; Y = yellow-green; Z = grass-green

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.595-1.6451.831
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Orthorhombic

Birefringence

0.028-0.0380.049
0 0.296
👆🏻

Clarity

Transparent
-

Pectolite and Atacamite Optic Character

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

Similar to their colors, Pectolite and Atacamite 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.