Onyx and Moss Agate Optical Properties

Onyx

Moss Agate

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Not Available

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Translucent, Opaque, Translucent to opaque

TranslucentWalter Schumann, Gemstones of the world (2001)

1.5 Refractive Index

1.530-1.5431.530-1.540

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

Not Available0.004

0 0.296

1.9 Clarity

OpaqueHerve Nicolas Lazzarelli

TranslucentWalter Schumann

Onyx and Moss Agate Optic Character

Onyx and Moss Agate optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Onyx and Moss Agate 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 Onyx and Moss Agate 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.

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Onyx and Moss Agate Transparency

Similar to their colors, Onyx and Moss Agate 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, Onyx is Opaque, Translucent and Translucent to opaque while Onyx is Opaque, Translucent and Translucent to opaque in appearance.