Garnet and Boulder Opal Optical Properties

Garnet

Boulder Opal

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Adamantine, Vitreous, Adamantine

Not Available

1.2 Pleochroism

None

AbsentWalter Schumann

1.3 Dispersion

0.02None

0.007 1

1.4 Transparency

Transparent, Transparent to translucent

Transparent, Translucent

1.5 Refractive Index

1.730-1.8951.370-1.470

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Garnet and Boulder Opal Optic Character

Garnet and Boulder Opal optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Garnet and Boulder Opal 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 Garnet and Boulder Opal 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 Semi Precious Gemstones

Garnet Vs Tanzanite

Garnet Vs Opal

Garnet Vs Tourmaline

Garnet and Boulder Opal Transparency

Similar to their colors, Garnet and Boulder Opal 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, Garnet is Transparent and Transparent to translucent while Garnet is Transparent and Transparent to translucent in appearance.