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Dioptase
Dioptase

Brookite
Brookite



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Dioptase
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Brookite

Dioptase and Brookite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Adamantine
1.2 Pleochroism
Weak; dark emerald green
Very weak
1.3 Dispersion
0.04NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TranslucentHerve Nicolas Lazzarelli
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.644-1.7202.583-2.741
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.051-0.0530.117
Achroite
0 0.296
1.9 Clarity
TranslucentHerve Nicolas Lazzarelli
Gemmological Tables (2004) More from other references

Dioptase and Brookite Optic Character

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

Dioptase and Brookite Transparency

Similar to their colors, Dioptase 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, Dioptase is TranslucentHerve Nicolas Lazzarelli while Dioptase is TranslucentHerve Nicolas Lazzarelli in appearance.