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Phenakite
Phenakite

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Phenakite and Peridot Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Greasy
1.2 Pleochroism
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
1.3 Dispersion
Albite Optical ..
0.02
Rank: 24 (Overall)
0.02
Rank: 18 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent
1.5 Refractive Index
1.650-1.695
1.64-1.69
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.016
0.036
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Phenakite and Peridot Optic Character

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

Phenakite and Peridot Transparency

Similar to their colors, Phenakite and Peridot 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.