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Brucite
Brucite

Antigorite
Antigorite



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Brucite
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Antigorite

Brucite and Antigorite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Waxy, Silky, Resinous, Greasy

Pleochroism

-
pale greenish yellow

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

TransparentMichael O’Donoghue
Translucent

Refractive Index

1.56-1.601.530-1.575
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

0.010-0.020-9999
0 0.296
👆🏻

Clarity

TransparentMichael O’Donoghue
Translucent

Brucite and Antigorite Optic Character

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

Brucite and Antigorite Transparency

Similar to their colors, Brucite and Antigorite 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, Brucite is TransparentMichael O’Donoghue while Brucite is TransparentMichael O’Donoghue in appearance.