Sonolite and Astrophyllite Optical Properties

Sonolite

Astrophyllite

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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

TransparentAnthony et al, Handbook of mineralogy (2001)

Translucent

1.5 Refractive Index

1.763-1.7931.678-1.758

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Triclinic

1.8 Birefringence

Not Available0.050

0 0.296

1.9 Clarity

TransparentAnthony et al

Translucent

Sonolite and Astrophyllite Optic Character

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

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Sonolite and Astrophyllite Transparency

Similar to their colors, Sonolite 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, Sonolite is Handbook of mineralogy (2001) and TransparentAnthony et al while Sonolite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.