Esperite and Common Opal Optical Properties

Esperite

Common Opal

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

colorless.

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

OpaqueAnthony et al, Opaque, Transparent

Translucent

1.5 Refractive Index

1.760-1.7741.37-1.52

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

0.012Not Available

0 0.296

1.9 Clarity

OpaqueAnthony et al

Translucent

Esperite and Common Opal Optic Character

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

Similar to their colors, Esperite and Common Opal 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, Esperite is Opaque, OpaqueAnthony et al and Transparent while Esperite is Opaque, OpaqueAnthony et al and Transparent in appearance.