Musgravite and Onyx Optical Properties

Musgravite

Onyx

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004)

Translucent, Opaque, Translucent to opaque

1.5 Refractive Index

1.719-1.7391.530-1.543

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

1.8 Birefringence

0.014-0.016Not Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

OpaqueHerve Nicolas Lazzarelli

Musgravite and Onyx Optic Character

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

Similar to their colors, Musgravite and Onyx 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, Musgravite is Gemmological Tables (2004) while Musgravite is Gemmological Tables (2004) in appearance.