Aquamarine and Pumpellyite Optical Properties

Aquamarine

Pumpellyite

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1 Optical Properties

1.1 Luster

Vitreous

Fibrous

1.2 Pleochroism

Not Available

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Gemmological Tables (2004)

1.5 Refractive Index

1.570-1.5921.674-1.764

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

monoclinic

1.8 Birefringence

0.005-0.0090.014-0.016

0 0.296

1.9 Clarity

Transparent to translucent

OpaqueUlrich Henn and Claudio C. Milisenda

Aquamarine and Pumpellyite Optic Character

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

Similar to their colors, Aquamarine and Pumpellyite 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, Aquamarine is Translucent, Transparent and Transparent to translucent while Aquamarine is Translucent, Transparent and Transparent to translucent in appearance.