Jet and Pearl Optical Properties

Jet

Pearl

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1 Optical Properties

1.1 Luster

Waxy

Pearly

1.2 Pleochroism

AbsentWalter Schumann

1.3 Dispersion

NoneNone

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Translucent, Opaque

1.5 Refractive Index

1.640-1.6801.52-1.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Amorphous

Orthorhombic

1.8 Birefringence

Not Available0.156

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Translucent

Jet and Pearl Optic Character

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

Similar to their colors, Jet and Pearl 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, Jet is Gemmological Tables (2004) More from other references while Jet is Gemmological Tables (2004) More from other references in appearance.