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Brucite
Brucite

Rubellite
Rubellite



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Brucite
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Rubellite

Brucite and Rubellite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.030.02
0.005 1
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Transparency

TransparentMichael O’Donoghue
Transparent, Translucent

Refractive Index

1.56-1.601.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.010-0.0200.014-0.040
0 0.296
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Clarity

TransparentMichael O’Donoghue
Transparent

Brucite and Rubellite Optic Character

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

Similar to their colors, Brucite and Rubellite 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.