Hardystonite and Omphacite Optical Properties

Hardystonite

Omphacite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous, Greasy

Vitreous

1.2 Pleochroism

Not Available

Weak: colorless -- very pale green -- very pale green

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Handbook of mineralogy (2001)

TranslucentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

1.6721.662-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Handbook of mineralogy (2001)

TranslucentAnthony et al

Hardystonite and Omphacite Optic Character

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

Similar to their colors, Hardystonite and Omphacite 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, Hardystonite is Handbook of mineralogy (2001) while Hardystonite is Handbook of mineralogy (2001) in appearance.