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Brookite
Brookite

Riebeckite
Riebeckite



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Brookite
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Riebeckite

Brookite and Riebeckite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous, Silky
1.2 Pleochroism
Very weak
X = blue
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Not Available
1.5 Refractive Index
2.583-2.7411.680-1.698
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.1170.005-0.008
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Not Available

Brookite and Riebeckite Optic Character

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

Brookite and Riebeckite Transparency

Similar to their colors, Brookite and Riebeckite 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, Brookite is Gemmological Tables (2004) More from other references while Brookite is Gemmological Tables (2004) More from other references in appearance.