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Emerald
Emerald

Unakite
Unakite



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Emerald
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Unakite

Emerald and Unakite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Strong dichroism: yellow green Lazzarelli
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent, Transparent to translucent
Gemstones of the world (2001)
1.5 Refractive Index
1.565-1.6021.525
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
monoclinic
1.8 Birefringence
0.0040-0.0070Not Available
Achroite
0 0.296
1.9 Clarity
Color grading system
Gemstones of the world (2001)

Emerald and Unakite Optic Character

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

Emerald and Unakite Transparency

Similar to their colors, Emerald and Unakite 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, Emerald is Translucent, Transparent and Transparent to translucent while Emerald is Translucent, Transparent and Transparent to translucent in appearance.