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Fire Opal and Brookite Optical Properties


Brookite and Fire Opal Optical Properties


Optical Properties

Luster
Not Available   
Adamantine   

Pleochroism
AbsentWalter Schumann   
Very weak   

Dispersion
None   
Not Available   

Transparency
Transparent, Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.370-1.470   
2.583-2.741   

Optic Character
Not Available   
Not Available   

Crystal System
Amorphous   
Orthorhombic   

Birefringence
Not Available   
0.117   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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<< Physical Properties

Fire Opal and Brookite Optic Character

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

Similar to their colors, Fire Opal and Brookite 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, Fire Opal is Translucent and Transparent while Fire Opal is Translucent and Transparent in appearance.

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