Malachite and Apache Tear Optical Properties

Malachite

Apache Tear

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1 Optical Properties

1.1 Luster

Adamantine, Vitreous, Silky, Fibrous

Not Available

1.2 Pleochroism

Not Available

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Opaque

Not Available

1.5 Refractive Index

1.655-1.909Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Amorphous

1.8 Birefringence

0.254Not Available

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Not Available

Malachite and Apache Tear Optic Character

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

Similar to their colors, Malachite and Apache Tear 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, Malachite is Opaque while Malachite is Opaque in appearance.