Baddeleyite and Covellite Optical Properties

Baddeleyite

Covellite

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1 Optical Properties

1.1 Luster

Adamantine

Resinous

1.2 Pleochroism

DistinctArthur Thomas

Marked

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

1.5 Refractive Index

2.13-2.201.45-2.62

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

Hexagonal

1.8 Birefringence

0.07Not Available

0 0.296

1.9 Clarity

Transparent

OpaqueAnthony et al

Baddeleyite and Covellite Optic Character

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

Similar to their colors, Baddeleyite and Covellite 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.