Hemimorphite and Erythrite Optical Properties

Hemimorphite

Erythrite

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine, Silky

Subadamantine, Pearly

1.2 Pleochroism

AbsentWalter Schumann

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent

Not Available

1.5 Refractive Index

1.614-1.6361.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

monoclinic

1.8 Birefringence

0.022Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Hemimorphite and Erythrite Optic Character

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

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