Astrophyllite and Heliodor Golden Beryl Optical Properties

Astrophyllite

Heliodor Golden Beryl

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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

Weak: golden-yellow

1.3 Dispersion

NA0.01

0.007 1

1.4 Transparency

Translucent

Transparent, Translucent

1.5 Refractive Index

1.678-1.7581.566-1.579

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

Not Available

1.8 Birefringence

0.0500.005-0.009

0 0.296

1.9 Clarity

Translucent

Transparent

Astrophyllite and Heliodor Golden Beryl Optic Character

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

Similar to their colors, Astrophyllite and Heliodor Golden Beryl 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.