Clinochlore and Vesuvianite Idocrase Optical Properties

Clinochlore

Vesuvianite Idocrase

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1 Optical Properties

1.1 Luster

Pearly, Greasy

Not Available

1.2 Pleochroism

Distinct: light yellow-green to light bluE

Not Available

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.571-1.5971.700-1.725

1 3.25

1.6 Optic Character

Biaxial/+

Uniaxial/-

1.7 Crystal System

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

Not Available

1.8 Birefringence

Not Available0.002-0.012

0 0.296

1.9 Clarity

Transparent

Clinochlore and Vesuvianite Idocrase Optic Character

Clinochlore and Vesuvianite Idocrase optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Clinochlore and Vesuvianite Idocrase 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 Vesuvianite Idocrase 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.Vesuvianite Idocrase has Uniaxial/- character.

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Clinochlore and Vesuvianite Idocrase Transparency

Similar to their colors, Clinochlore and Vesuvianite Idocrase 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.