Sunstone and Andradite Garnet Optical Properties

Sunstone

Andradite Garnet

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine

1.2 Pleochroism

Weak or absentWalter Schumann

Not Available

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Opaque, Transparent to opaque

1.5 Refractive Index

1.53-1.551.888-1.889

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

Isometric

1.8 Birefringence

0.007-0.010Not Available

0 0.296

1.9 Clarity

Transparent to translucent

Transparent to opaque

Sunstone and Andradite Garnet Optic Character

Sunstone and Andradite Garnet optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sunstone and Andradite Garnet 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 Sunstone and Andradite Garnet 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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Sunstone and Andradite Garnet Transparency

Similar to their colors, Sunstone and Andradite Garnet 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, Sunstone is Translucent, Transparent and Transparent to translucent while Sunstone is Translucent, Transparent and Transparent to translucent in appearance.