Sapphire and Clinochlore Optical Properties

Sapphire

Clinochlore

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine, Vitreous, Adamantine

Pearly, Greasy

1.2 Pleochroism

Strong

Distinct: light yellow-green to light bluE

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to opaque

Transparent

1.5 Refractive Index

1.762-1.7881.571-1.597

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Trigonal

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

1.8 Birefringence

0.008-0.009Not Available

0 0.296

1.9 Clarity

Transparent

Sapphire and Clinochlore Optic Character

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

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Sapphire and Clinochlore Transparency

Similar to their colors, Sapphire 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, Sapphire is Translucent, Transparent and Transparent to opaque while Sapphire is Translucent, Transparent and Transparent to opaque in appearance.