Home
Gemstones


Elbaite and Demantoid Optical Properties


Demantoid and Elbaite Optical Properties


Optical Properties

Luster
Vitreous   
Adamantine   

Pleochroism
Pale green   
None   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent   
Gemmological Tables (2004)   

Refractive Index
1.614-1.666   
1.880-1.890   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
cubic   

Birefringence
0.014-0.032   
Not Available   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

Benefits >>
<< Physical Properties

Elbaite and Demantoid Optic Character

Elbaite and Demantoid optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Elbaite and Demantoid 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 Elbaite and Demantoid 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 Blue Gemstones

Elbaite and Demantoid Transparency

Similar to their colors, Elbaite and Demantoid 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, Elbaite is Transparent while Elbaite is Transparent in appearance.

Blue Gemstones

Blue Gemstones


Compare Blue Gemstones