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Calcite
Calcite

Omphacite
Omphacite



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Calcite
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Omphacite

Calcite and Omphacite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
NilArthur Thomas
Weak: colorless -- very pale green -- very pale green
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TranslucentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.486-1.6581.662-1.723
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.154-0.174Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
TranslucentAnthony et al

Calcite and Omphacite Optic Character

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

Calcite and Omphacite Transparency

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