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Brucite
Brucite

Danburite
Danburite



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Brucite
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Danburite

Brucite and Danburite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous, Greasy

Pleochroism

-
Weak: pale yellow yellow

Dispersion

0.030.02
0.005 1
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Transparency

TransparentMichael O’Donoghue
-

Refractive Index

1.56-1.601.627-1.639
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

Trigonal
Orthorhombic

Birefringence

0.010-0.0200.006
0 0.296
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Clarity

TransparentMichael O’Donoghue
TransparentUlrich Henn and Claudio C. Milisenda

Brucite and Danburite Optic Character

Brucite and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Brucite and Danburite 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 Danburite 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. Danburite has Biaxial/+ character.

Brucite and Danburite Transparency

Similar to their colors, Brucite and Danburite 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.