Cat s Eye and Astrophyllite Optical Properties

Cat s Eye

Astrophyllite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Greasy, Pearly

1.2 Pleochroism

Not Available

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

1.5 Refractive Index

1.744-1.7551.678-1.758

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Triclinic

1.8 Birefringence

Not Available0.050

0 0.296

1.9 Clarity

Translucent

Cat s Eye and Astrophyllite Optic Character

Cat s Eye and Astrophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cat s Eye and Astrophyllite 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 Cat s Eye and Astrophyllite 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

Cat s Eye Vs White topaz

Cat s Eye Vs London blue topaz

Cat s Eye Vs Mystic topaz

Cat s Eye and Astrophyllite Transparency

Similar to their colors, Cat s Eye and Astrophyllite 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, Cat s Eye is Translucent while Cat s Eye is Translucent in appearance.