Almandine Garnet and Grandidierite Optical Properties

Almandine Garnet

Grandidierite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

Not Available

visible

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.780-1.8101.578-1.639

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Isometric

Orthorhombic

1.8 Birefringence

Not Available0.037-0.039

0 0.296

1.9 Clarity

Transparent to translucent

Gemmological Tables (2004) More from other references

Almandine Garnet and Grandidierite Optic Character

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

Almandine Garnet Vs Mystic topaz

Almandine Garnet Vs dendritic agate

Almandine Garnet Vs London blue topaz

Almandine Garnet and Grandidierite Transparency

Similar to their colors, Almandine Garnet and Grandidierite 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 Garnet is Translucent, Transparent and Transparent to translucent while Almandine Garnet is Translucent, Transparent and Transparent to translucent in appearance.