Brucite and Tantalite Optical Properties

Brucite

Tantalite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Resinous

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentMichael OâDonoghue, Gems, Sixth Edition (2006)

TransparentWalter Schumann, Gemstones of the world (2001) More from other references

1.5 Refractive Index

1.56-1.602.190-2.457

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

0.010-0.0200.083

0 0.296

1.9 Clarity

TransparentMichael OâDonoghue

TransparentWalter Schumann

Brucite and Tantalite Optic Character

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

Similar to their colors, Brucite and Tantalite 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 Gems, Sixth Edition (2006) and TransparentMichael OâDonoghue while Brucite is Gems, Sixth Edition (2006) and TransparentMichael OâDonoghue in appearance.