Transvaal Jade and Dioptase Optical Properties

Transvaal Jade

Dioptase

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

Weak; dark emerald green

1.3 Dispersion

0.030.04

0.007 1

1.4 Transparency

Gemmological Tables (2004)

TranslucentHerve Nicolas Lazzarelli

1.5 Refractive Index

Not Available1.644-1.720

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

TransparentUlrich Henn and Claudio C. Milisenda

TranslucentHerve Nicolas Lazzarelli

Transvaal Jade and Dioptase Optic Character

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

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Transvaal Jade and Dioptase Transparency

Similar to their colors, Transvaal Jade 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, Transvaal Jade is Gemmological Tables (2004) while Transvaal Jade is Gemmological Tables (2004) in appearance.