Williamsite and Pumpellyite Optical Properties

Williamsite

Pumpellyite

Add ⊕

1 Optical Properties

1.1 Luster

Waxy, Silky, Resinous, Greasy

Fibrous

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

Gemmological Tables (2004)

1.5 Refractive Index

1.530-1.5751.674-1.764

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

Not Available0.014-0.016

0 0.296

1.9 Clarity

TranslucentHerve Nicolas Lazzarelli

OpaqueUlrich Henn and Claudio C. Milisenda

Williamsite and Pumpellyite Optic Character

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

Compare Green Gemstones

Williamsite Vs Idocrase

Williamsite Vs Garnet Malaia

Williamsite Vs Fancy Diamond

Williamsite and Pumpellyite Transparency

Similar to their colors, Williamsite 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, Williamsite is Blue Chart Gem Identification (2010) and TranslucentHerve Nicolas Lazzarelli while Williamsite is Blue Chart Gem Identification (2010) and TranslucentHerve Nicolas Lazzarelli in appearance.