Clinochlore and Williamsite Optical Properties

Clinochlore

Williamsite

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1 Optical Properties

1.1 Luster

Pearly, Greasy

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Distinct: light yellow-green to light bluE

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

1.5 Refractive Index

1.571-1.5971.530-1.575

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Clinochlore and Williamsite Optic Character

Clinochlore and Williamsite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Clinochlore and Williamsite 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 Clinochlore and Williamsite 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. Clinochlore has Biaxial/+ character.

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Clinochlore Vs Dioptase

Clinochlore Vs Demantoid

Clinochlore Vs Dravite

Clinochlore and Williamsite Transparency

Similar to their colors, Clinochlore and Williamsite 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, Clinochlore is Transparent while Clinochlore is Transparent in appearance.