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Hureaulite
Hureaulite

Apophyllite
Apophyllite



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Hureaulite
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Apophyllite

Hureaulite and Apophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Pearly
1.2 Pleochroism
Colorless yellow to pale rose reddish yellow to reddish brown.Anthony et al
Dichroic (colorless)
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.647-1.667
1.530-1.543
1.6 Optic Character
Not Available
Uniaxial/-
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
tetragonal
1.8 Birefringence
0.012
0.000-0.003
1.9 Clarity
Transparent
Transparent

Hureaulite and Apophyllite Optic Character

Hureaulite and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Hureaulite and Apophyllite 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 Hureaulite and Apophyllite 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. Apophyllite has Uniaxial/- character.

Hureaulite and Apophyllite Transparency

Similar to their colors, Hureaulite and Apophyllite 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, Hureaulite is Transparent while Hureaulite is Transparent in appearance.