Variscite and Hematite Optical Properties

Variscite

Hematite

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1 Optical Properties

1.1 Luster

Vitreous, Waxy

Not Available

1.2 Pleochroism

MissingWalter Schumann

O = brownish red; E = yellowish red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent, Opaque . May be translucent when backlit on the edges.

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

1.5 Refractive Index

1.560-1.5942.690-3.220

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Trigonal

1.8 Birefringence

0.0310.280

0 0.296

1.9 Clarity

Translucent

OpaqueHerve Nicolas Lazzarelli

Variscite and Hematite Optic Character

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

Similar to their colors, Variscite 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, Variscite is Opaque . May be translucent when backlit on the edges. and Translucent while Variscite is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.