Arfvedsonite and Omphacite Optical Properties

Arfvedsonite

Omphacite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Strong: Blue-greens

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

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

TranslucentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

1.652-1.6991.662-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

TranslucentAnthony et al

Arfvedsonite and Omphacite Optic Character

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

Similar to their colors, Arfvedsonite 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, Arfvedsonite is Not Available while Arfvedsonite is Not Available in appearance.