Home
Gemstones


Danburite and Coral Optical Properties


Coral and Danburite Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Not Available   

Pleochroism
Weak: pale yellow yellow   
AbsentWalter Schumann   

Dispersion
0.02   
22
None   

Transparency
Gemmological Tables (2004) More from other references   
Translucent   

Refractive Index
1.627-1.639   
1.486-1.658   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.006   
0.160-0.172   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Translucent   

Benefits >>
<< Physical Properties

Danburite and Coral Optic Character

Danburite and Coral optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Danburite and Coral 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 Danburite and Coral 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. Danburite has Biaxial/+ character.

Compare Yellow Gemstones

Danburite and Coral Transparency

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

Yellow Gemstones

Yellow Gemstones


Compare Yellow Gemstones