Gadolinium Gallium Garnet and Covellite Optical Properties

Gadolinium Gallium Garnet

Covellite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Resinous

1.2 Pleochroism

Not Available

Marked

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

1.5 Refractive Index

1.97-2.031.45-2.62

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Hexagonal

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

OpaqueAnthony et al

Gadolinium Gallium Garnet and Covellite Optic Character

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

Gadolinium Gallium Garnet Vs Hydrogrossular

Gadolinium Gallium Garnet Vs Hibonite

Gadolinium Gallium Garnet Vs Howlite

Gadolinium Gallium Garnet and Covellite Transparency

Similar to their colors, Gadolinium Gallium Garnet and Covellite 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, Gadolinium Gallium Garnet is Not Available while Gadolinium Gallium Garnet is Not Available in appearance.