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Bertrandite
Bertrandite

Fancy Diamond
Fancy Diamond



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Bertrandite
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Fancy Diamond

Bertrandite and Fancy Diamond Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
none.
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Not Available
1.5 Refractive Index
1.583-1.6142.42
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
cubic
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
TransparentAnthony et al
Color grading system

Bertrandite and Fancy Diamond Optic Character

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

Bertrandite and Fancy Diamond Transparency

Similar to their colors, Bertrandite and Fancy Diamond 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, Bertrandite is Handbook of mineralogy (2001) and TransparentAnthony et al while Bertrandite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.