Apophyllite and Clinochlore Optical Properties

Apophyllite

Clinochlore

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Pearly, Greasy

1.2 Pleochroism

Dichroic (colorless)

Distinct: light yellow-green to light bluE

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Transparent

1.5 Refractive Index

1.530-1.5431.571-1.597

1 3.25

1.6 Optic Character

Uniaxial/-

Biaxial/+

1.7 Crystal System

tetragonal

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

1.8 Birefringence

0.000-0.003Not Available

0 0.296

1.9 Clarity

Transparent

Apophyllite and Clinochlore Optic Character

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

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Apophyllite and Clinochlore Transparency

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