Ceylonite and Bertrandite Optical Properties

Ceylonite

Bertrandite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Absent

none.

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

TransparentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

1.770-1.7801.583-1.614

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Isometric

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TransparentAnthony et al

Ceylonite and Bertrandite Optic Character

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

Similar to their colors, Ceylonite and Bertrandite 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, Ceylonite is Translucent and Transparent while Ceylonite is Translucent and Transparent in appearance.