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Cassiterite
Cassiterite

Malachite
Malachite



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Cassiterite
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Malachite

Cassiterite and Malachite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Greasy
Adamantine, Vitreous, Silky, Fibrous
1.2 Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
Not Available
1.3 Dispersion
0.07None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Opaque
1.5 Refractive Index
1.990-2.1051.655-1.909
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
monoclinic
1.8 Birefringence
0.096-0.0980.254
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Cassiterite and Malachite Optic Character

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

Cassiterite and Malachite Transparency

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