Purpurite and Pearl Optical Properties

Purpurite

Pearl

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1 Optical Properties

1.1 Luster

Not Available

Pearly

1.2 Pleochroism

StrongArthur Thomas

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001) More from other references

Translucent, Opaque

1.5 Refractive Index

1.85-1.921.52-1.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

1.8 Birefringence

0.0700.156

0 0.296

1.9 Clarity

TranslucentWalter Schumann

Translucent

Purpurite and Pearl Optic Character

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

Similar to their colors, Purpurite 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, Purpurite is Gemstones of the world (2001) More from other references and TranslucentWalter Schumann while Purpurite is Gemstones of the world (2001) More from other references and TranslucentWalter Schumann in appearance.