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Calcite
Calcite

Steatite
Steatite



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Calcite
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Steatite

Calcite and Steatite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.486-1.6581.539-1.596
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.154-0.1740.046-0.050
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueUlrich Henn and Claudio C. Milisenda

Calcite and Steatite Optic Character

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

Similar to their colors, Calcite and Steatite 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.