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Antigorite
Antigorite

Brookite
Brookite



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Antigorite
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Brookite

Antigorite and Brookite Optical Properties

1 Optical Properties
1.1 Luster
Waxy, Silky, Resinous, Greasy
Adamantine
1.2 Pleochroism
pale greenish yellow.
Very weak
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.530-1.5752.583-2.741
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
Orthorhombic
1.8 Birefringence
Not Available0.117
Achroite
0 0.296
1.9 Clarity
Translucent
Gemmological Tables (2004) More from other references

Antigorite and Brookite Optic Character

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

Antigorite and Brookite Transparency

Similar to their colors, Antigorite 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, Antigorite is Translucent while Antigorite is Translucent in appearance.