Home
Gemstones


Goethite and Sanidine Optical Properties


Sanidine and Goethite Optical Properties


Optical Properties

Luster
Adamantine   
Not Available   

Pleochroism
VisibleArthur Thomas   
WeakMichael O’Donoghue   

Dispersion
Not Available   
Not Available   

Transparency
Gemstones (2009)   
Transparent   

Refractive Index
2.26-2.398   
1.518-1.536   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Not Available   

Birefringence
0.138   
0.005-0.008   

Clarity
Gemstones (2009)   
Transparent   

Benefits >>
<< Physical Properties

Goethite and Sanidine Optic Character

Goethite and Sanidine optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Goethite and Sanidine 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 Goethite and Sanidine 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 Brown Gemstones

Goethite and Sanidine Transparency

Similar to their colors, Goethite and Sanidine 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, Goethite is Gemstones (2009) while Goethite is Gemstones (2009) in appearance.

Brown Gemstones

Brown Gemstones


Compare Brown Gemstones