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Brucite
Brucite

Dioptase
Dioptase



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Brucite
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Dioptase

Brucite and Dioptase Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
Weak; dark emerald green

Dispersion

0.030.04
0.005 1
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Transparency

TransparentMichael O’Donoghue
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.56-1.601.644-1.720
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.010-0.0200.051-0.053
0 0.296
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Clarity

TransparentMichael O’Donoghue
TranslucentHerve Nicolas Lazzarelli

Brucite and Dioptase Optic Character

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

Similar to their colors, Brucite and Dioptase 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.