Norbergite and Dioptase Optical Properties

Norbergite

Dioptase

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Pale yellow very pale yellow colorlessAnthony et al

Weak; dark emerald green

1.3 Dispersion

NA0.04

0.007 1

1.4 Transparency

Transparent

TranslucentHerve Nicolas Lazzarelli

1.5 Refractive Index

1.563-1.5931.644-1.720

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Trigonal

1.8 Birefringence

Not Available0.051-0.053

0 0.296

1.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Norbergite and Dioptase Optic Character

Norbergite and Dioptase optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Norbergite and Dioptase 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 Norbergite and Dioptase 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 Yellow Gemstones

Norbergite Vs Powellite

Norbergite Vs Precious Opal

Norbergite Vs Prase Opal

Norbergite and Dioptase Transparency

Similar to their colors, Norbergite and Dioptase 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, Norbergite is Transparent while Norbergite is Transparent in appearance.