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Oligoclase
Oligoclase

Dioptase
Dioptase



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Oligoclase
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Dioptase

Oligoclase and Dioptase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
Weak; dark emerald green
1.3 Dispersion
NA0.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
TranslucentHerve Nicolas Lazzarelli
1.5 Refractive Index
1.538-1.5501.644-1.720
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.0100.051-0.053
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TranslucentHerve Nicolas Lazzarelli

Oligoclase and Dioptase Optic Character

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

Oligoclase and Dioptase Transparency

Similar to their colors, Oligoclase and Dioptase 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, Oligoclase is Gemmological Tables (2004) while Oligoclase is Gemmological Tables (2004) in appearance.