Esperite and Hematite Optical Properties

Esperite

Hematite

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

colorless.

O = brownish red; E = yellowish red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

OpaqueAnthony et al, Opaque, Transparent

OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.760-1.7742.690-3.220

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Trigonal

1.8 Birefringence

0.0120.280

0 0.296

1.9 Clarity

OpaqueAnthony et al

OpaqueHerve Nicolas Lazzarelli

Esperite and Hematite Optic Character

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

Similar to their colors, Esperite and Hematite 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.