Enstatite and Mellite Optical Properties

Enstatite

Mellite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Vitreous

1.2 Pleochroism

Pale green to pale orange

Weak: yellowish brown yellowAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.650-1.6801.509-1.541

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.009-0.0110.030

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Enstatite and Mellite Optic Character

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

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Enstatite and Mellite Transparency

Similar to their colors, Enstatite 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, Enstatite is Translucent and Transparent while Enstatite is Translucent and Transparent in appearance.