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Brucite
Brucite

Actinolite
Actinolite



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Brucite
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Actinolite

Brucite and Actinolite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
moderate

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

TransparentMichael O’Donoghue
TransparentUlrich Henn and Claudio C. Milisenda

Refractive Index

1.56-1.601.613-1.628
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

0.010-0.0200.0250-0.0270
0 0.296
👆🏻

Clarity

TransparentMichael O’Donoghue
TransparentUlrich Henn and Claudio C. Milisenda

Brucite and Actinolite Optic Character

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

Similar to their colors, Brucite and Actinolite 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.