Moss Agate and Covellite Optical Properties

Moss Agate

Covellite

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1 Optical Properties

1.1 Luster

Not Available

Resinous

1.2 Pleochroism

AbsentWalter Schumann

Marked

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

1.5 Refractive Index

1.530-1.5401.45-2.62

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Hexagonal

1.8 Birefringence

0.004Not Available

0 0.296

1.9 Clarity

TranslucentWalter Schumann

OpaqueAnthony et al

Moss Agate and Covellite Optic Character

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

Similar to their colors, Moss Agate and Covellite 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, Moss Agate is Gemstones of the world (2001) and TranslucentWalter Schumann while Moss Agate is Gemstones of the world (2001) and TranslucentWalter Schumann in appearance.