×

Almandine
Almandine

Danburite
Danburite



ADD
Compare
X
Almandine
X
Danburite

Almandine and Danburite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Vitreous, Greasy
1.2 Pleochroism
None
Weak: pale yellow yellow
1.3 Dispersion
0.030.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.770-1.8201.627-1.639
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
cubic
Orthorhombic
1.8 Birefringence
Not Available0.006
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Almandine and Danburite Optic Character

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

Almandine and Danburite Transparency

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