Home
Gemstones


Brookite and Amethyst Optical Properties


Amethyst and Brookite Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous   

Pleochroism
Very weak   
None   

Dispersion
Not Available   
0.01   
27

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

Refractive Index
2.583-2.741   
1.544-1.553   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.117   
0.009   

Clarity
Gemmological Tables (2004) More from other references   
Transparent   

Benefits >>
<< Physical Properties

Brookite and Amethyst Optic Character

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

Compare Red Gemstones

Brookite and Amethyst Transparency

Similar to their colors, Brookite and Amethyst 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, Brookite is Gemmological Tables (2004) More from other references while Brookite is Gemmological Tables (2004) More from other references in appearance.

Red Gemstones

Red Gemstones


Compare Red Gemstones