Baddeleyite and Sinhalite Optical Properties

Baddeleyite

Sinhalite

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1 Optical Properties

1.1 Luster

Adamantine

Not Available

1.2 Pleochroism

DistinctArthur Thomas

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

2.13-2.201.665-1.712

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Orthorhombic

1.8 Birefringence

0.070.036-0.042

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Baddeleyite and Sinhalite Optic Character

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

Similar to their colors, Baddeleyite and Sinhalite 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, Baddeleyite is Transparent while Baddeleyite is Transparent in appearance.