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Cancrinite and Brucite Optical Properties


Brucite and Cancrinite Optical Properties


Optical Properties

Luster
Vitreous, Greasy, Pearly   
Vitreous, Pearly   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
TransparentMichael O’Donoghue, Gems, Sixth Edition (2006)   

Refractive Index
1.491-1.524   
1.56-1.60   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Trigonal   

Birefringence
0.012-0.025   
0.010-0.020   

Clarity
Transparent   
TransparentMichael O’Donoghue   

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Cancrinite and Brucite Optic Character

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

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Cancrinite and Brucite Transparency

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

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