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Atacamite
Atacamite

Brookite
Brookite



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Atacamite
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Brookite

Atacamite and Brookite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous
Adamantine
1.2 Pleochroism
X = pale green; Y = yellow-green; Z = grass-green
Very weak
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.831
2.583-2.741
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.049
0.117
1.9 Clarity
Not Available
Gemmological Tables (2004) More from other references

Atacamite and Brookite Optic Character

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

Atacamite and Brookite Transparency

Similar to their colors, Atacamite and Brookite 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, Atacamite is Not Available while Atacamite is Not Available in appearance.