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Tahitian pearl
Tahitian pearl

Bertrandite
Bertrandite



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Tahitian pearl
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Bertrandite

Tahitian pearl and Bertrandite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
none.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
Not Available1.583-1.614
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentAnthony et al

Tahitian pearl and Bertrandite Optic Character

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

Tahitian pearl and Bertrandite Transparency

Similar to their colors, Tahitian pearl 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, Tahitian pearl is Not Available while Tahitian pearl is Not Available in appearance.