Baddeleyite and Umbalite Optical Properties

Baddeleyite

Umbalite

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1 Optical Properties

1.1 Luster

Adamantine

Not Available

1.2 Pleochroism

DistinctArthur Thomas

Not Available

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

TransparentGemdat.org, Management Team (2012)

1.5 Refractive Index

2.13-2.201.730-1.820

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

Not Available

1.8 Birefringence

0.07Not Available

0 0.296

1.9 Clarity

Transparent

TransparentGemdat.org

Baddeleyite and Umbalite Optic Character

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

Similar to their colors, Baddeleyite and Umbalite 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.