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Emerald
Emerald

Chalcedony
Chalcedony



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Emerald
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Chalcedony

Emerald and Chalcedony Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong dichroism: yellow green Lazzarelli
AbsentWalter Schumann
1.3 Dispersion
0.01None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent, Transparent to translucent
Translucent, Translucent to opaque
1.5 Refractive Index
1.565-1.6021.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
0.0040-0.00700.003-0.009
Achroite
0 0.296
1.9 Clarity
Color grading system
Translucent

Emerald and Chalcedony Optic Character

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

Similar to their colors, Emerald and Chalcedony 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.