Astrophyllite and Moss Agate Optical Properties

Astrophyllite

Moss Agate

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1 Optical Properties

1.1 Luster

Greasy, Pearly

Not Available

1.2 Pleochroism

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

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Translucent

TranslucentWalter Schumann, Gemstones of the world (2001)

1.5 Refractive Index

1.678-1.7581.530-1.540

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

Not Available

1.8 Birefringence

0.0500.004

0 0.296

1.9 Clarity

Translucent

TranslucentWalter Schumann

Astrophyllite and Moss Agate Optic Character

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

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Astrophyllite and Moss Agate Transparency

Similar to their colors, Astrophyllite and Moss Agate 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.