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Achroite
Achroite

Omphacite
Omphacite



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Achroite
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Omphacite

Achroite and Omphacite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Weak: colorless -- very pale green -- very pale green
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TranslucentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.614-1.6661.662-1.723
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
0.014-0.040Not Available
Ammolite
0 0.296
1.9 Clarity
Transparent
TranslucentAnthony et al

Achroite and Omphacite Optic Character

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

Achroite and Omphacite Transparency

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