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Amber and Bertrandite Optical Properties


Bertrandite and Amber Optical Properties


Optical Properties

Luster
Resinous   
Vitreous   

Pleochroism
AbsentWalter Schumann   
none.   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent   
TransparentAnthony et al, Handbook of mineralogy (2001)   

Refractive Index
1.539-1.545   
1.583-1.614   

Optic Character
Not Available   
Not Available   

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

Birefringence
Not Available   
Not Available   

Clarity
Transparent   
TransparentAnthony et al   

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Amber and Bertrandite Optic Character

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

Amber and Bertrandite Transparency

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

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