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Boracite
Boracite

Cassiterite
Cassiterite



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Boracite
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Cassiterite

Boracite and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Adamantine, Greasy
1.2 Pleochroism
None
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
NA0.07
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.658-1.6731.990-2.105
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
tetragonal
1.8 Birefringence
0.010-0.0110.096-0.098
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Boracite and Cassiterite Optic Character

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

Boracite and Cassiterite Transparency

Similar to their colors, Boracite and Cassiterite 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, Boracite is Transparent while Boracite is Transparent in appearance.