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Brookite
Brookite

Malachite
Malachite



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Brookite
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Malachite

Brookite and Malachite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Adamantine, Vitreous, Silky, Fibrous
1.2 Pleochroism
Very weak
Not Available
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.7 Transparency
Gemmological Tables (2004) More from other references
Opaque
1.8 Refractive Index
2.583-2.7411.655-1.909
Agate Opal
1 3.25
1.10 Optic Character
Not Available
Not Available
1.11 Crystal System
Orthorhombic
monoclinic
1.12 Birefringence
0.1170.254
Achroite
0 0.296
1.13 Clarity
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references

Brookite and Malachite Optic Character

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

Brookite and Malachite Transparency

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