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Brucite
Brucite

Elbaite
Elbaite



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Brucite
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Elbaite

Brucite and Elbaite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
Pale green

Dispersion

0.030.02
0.005 1
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Transparency

TransparentMichael O’Donoghue
Transparent

Refractive Index

1.56-1.601.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.010-0.0200.014-0.032
0 0.296
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Clarity

TransparentMichael O’Donoghue
Transparent

Brucite and Elbaite Optic Character

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

Similar to their colors, Brucite and Elbaite 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.