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Apophyllite
Apophyllite

Brazilianite
Brazilianite



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Apophyllite
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Brazilianite

Apophyllite and Brazilianite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
Dichroic (colorless)
Very weakWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
3.8 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
3.9 Refractive Index
1.530-1.5431.602-1.625
Agate Opal
1 3.25
3.15 Optic Character
Uniaxial/-
Not Available
3.17 Crystal System
tetragonal
monoclinic
3.18 Birefringence
0.000-0.0030.019-0.021
Achroite
0 0.296
5.4 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Apophyllite and Brazilianite Optic Character

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

Similar to their colors, Apophyllite and Brazilianite 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.