Esperite and Mellite Optical Properties

Esperite

Mellite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

colorless.

Weak: yellowish brown yellowAnthony et al

1.3 Dispersion

Albite Optical ..

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Not Available

Rank: N/A (Overall)▶

Not Available

Rank: N/A (Overall)▶

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Fluorite Optical Properties

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0.044 (Anglesite Opt..)

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1.4 Transparency

OpaqueAnthony et al, Opaque, Transparent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.760-1.774

1.509-1.541

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

0.012

0.030

1.9 Clarity

OpaqueAnthony et al

TransparentUlrich Henn and Claudio C. Milisenda

Esperite and Mellite Optic Character

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

Compare White Gemstones

Esperite Vs Hackmanite

Esperite Vs Hardystonite

Esperite Vs Hydrogrossular

Esperite and Mellite Transparency

Similar to their colors, Esperite and Mellite 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.

White Gemstones

Ettringite

Fluorapatite

Forsterite

Goshenite

Hackmanite

Hardystonite