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Apophyllite
Apophyllite

Brookite
Brookite



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Apophyllite
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Brookite

Apophyllite and Brookite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine
1.2 Pleochroism
Dichroic (colorless)
Very weak
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.530-1.5432.583-2.741
Agate Opal
1 3.25
1.6 Optic Character
Uniaxial/-
Not Available
1.7 Crystal System
tetragonal
Orthorhombic
1.8 Birefringence
0.000-0.0030.117
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Apophyllite and Brookite Optic Character

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

Similar to their colors, Apophyllite and Brookite 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.