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Malachite
Malachite

Brucite
Brucite



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Malachite
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Brucite

Malachite and Brucite Optical Properties

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Optical Properties

Luster

Adamantine, Vitreous, Silky
Vitreous, Pearly

Pleochroism

-
-

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

Opaque
TransparentMichael O’Donoghue

Refractive Index

1.655-1.9091.56-1.60
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.2540.010-0.020
0 0.296
👆🏻

Clarity

-
TransparentMichael O’Donoghue

Malachite and Brucite Optic Character

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

Malachite and Brucite Transparency

Similar to their colors, Malachite and Brucite 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, Malachite is Opaque while Malachite is Opaque in appearance.