Montebrasite and Inderite Optical Properties

Montebrasite

Inderite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Pearly, Greasy

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

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

Gemmological Tables (2004)

1.5 Refractive Index

1.578-1.6461.488-1.505

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Not Available

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

1.8 Birefringence

0.020-0.0300.017

0 0.296

1.9 Clarity

TransparentWalter Schumann

TransparentUlrich Henn and Claudio C. Milisenda

Montebrasite and Inderite Optic Character

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

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Montebrasite and Inderite Transparency

Similar to their colors, Montebrasite and Inderite 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, Montebrasite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Montebrasite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.