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Biotite
Biotite

Dumortierite quartz
Dumortierite quartz



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Biotite
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Dumortierite quartz

Biotite and Dumortierite quartz Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
Strong
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Not Available
1.5 Refractive Index
1.565-1.625Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.03-0.07Not Available
Achroite
0 0.296
1.9 Clarity
Not Available
Not Available

Biotite and Dumortierite quartz Optic Character

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

Biotite and Dumortierite quartz Transparency

Similar to their colors, Biotite and Dumortierite quartz 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, Biotite is Not Available while Biotite is Not Available in appearance.