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Apophyllite
Apophyllite

Hureaulite
Hureaulite



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Apophyllite
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Hureaulite

Apophyllite and Hureaulite Optical Properties

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

Apophyllite and Hureaulite Optic Character

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

Apophyllite and Hureaulite Transparency

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