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Chalcedony
Chalcedony

Hureaulite
Hureaulite



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Chalcedony
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Hureaulite

Chalcedony and Hureaulite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Greasy
1.2 Pleochroism
AbsentWalter Schumann
Colorless yellow to pale rose reddish yellow to reddish brown.Anthony et al
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Translucent to opaque
Transparent
1.5 Refractive Index
1.530-1.5431.647-1.667
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
1.8 Birefringence
0.003-0.0090.012
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Chalcedony and Hureaulite Optic Character

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

Chalcedony and Hureaulite Transparency

Similar to their colors, Chalcedony and Hureaulite 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, Chalcedony is Translucent and Translucent to opaque while Chalcedony is Translucent and Translucent to opaque in appearance.