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Phenakite
Phenakite

Vesuvianite Idocrase
Vesuvianite Idocrase



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Phenakite
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Vesuvianite Idocrase

Phenakite and Vesuvianite Idocrase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
Not Available
1.3 Dispersion
0.020.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent
1.5 Refractive Index
1.650-1.6951.700-1.725
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Uniaxial/-
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.0160.002-0.012
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Phenakite and Vesuvianite Idocrase Optic Character

Phenakite and Vesuvianite Idocrase optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Phenakite and Vesuvianite Idocrase 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 Phenakite and Vesuvianite Idocrase 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. Vesuvianite Idocrase has Uniaxial/- character.

Phenakite and Vesuvianite Idocrase Transparency

Similar to their colors, Phenakite and Vesuvianite Idocrase 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, Phenakite is Gemmological Tables (2004) More from other references while Phenakite is Gemmological Tables (2004) More from other references in appearance.