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Brucite
Brucite

Feldspar
Feldspar



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Brucite
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Feldspar

Brucite and Feldspar Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
None

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

TransparentMichael O’Donoghue
Transparent, Translucent

Refractive Index

1.56-1.601.518-1.570
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Triclinic or monoclinic

Birefringence

0.010-0.0200.008-0.010
0 0.296
👆🏻

Clarity

TransparentMichael O’Donoghue
Transparent

Brucite and Feldspar Optic Character

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

Similar to their colors, Brucite and Feldspar 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.