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Rossmanite
Rossmanite

Danburite
Danburite



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Rossmanite
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Danburite

Rossmanite and Danburite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Greasy
1.2 Pleochroism
Not Available
Weak: pale yellow yellow
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWebmineral.com, Mineralogy Database (2012)
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.624-1.6451.627-1.639
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.0210.006
Achroite
0 0.296
1.9 Clarity
TransparentWebmineral.com
TransparentUlrich Henn and Claudio C. Milisenda

Rossmanite and Danburite Optic Character

Rossmanite and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rossmanite and Danburite 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 Rossmanite and Danburite 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. Danburite has Biaxial/+ character.

Rossmanite and Danburite Transparency

Similar to their colors, Rossmanite and Danburite 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, Rossmanite is Mineralogy Database (2012) and TransparentWebmineral.com while Rossmanite is Mineralogy Database (2012) and TransparentWebmineral.com in appearance.