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Caledonite
Caledonite

Brucite
Brucite



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Caledonite
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Brucite

Caledonite and Brucite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Weak
-

Dispersion

0.050.03
0.005 1
👆🏻

Transparency

Transparent
TransparentMichael O’Donoghue

Refractive Index

1.818-1.9091.56-1.60
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.0910.010-0.020
0 0.296
👆🏻

Clarity

Transparent
TransparentMichael O’Donoghue

Caledonite and Brucite Optic Character

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

Caledonite and Brucite Transparency

Similar to their colors, Caledonite 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, Caledonite is Transparent while Caledonite is Transparent in appearance.