Moss Agate and Cordierite Iolite Optical Properties

Moss Agate

Cordierite Iolite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Strong trichroism: colorless to yellowish

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

Transparent

1.5 Refractive Index

1.530-1.5401.542-1.578

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Not Available

1.8 Birefringence

0.0040.008-0.012

0 0.296

1.9 Clarity

TranslucentWalter Schumann

Transparent

Moss Agate and Cordierite Iolite Optic Character

Moss Agate and Cordierite Iolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Moss Agate and Cordierite Iolite 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 Cordierite Iolite 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. Cordierite Iolite has Biaxial/+ character.

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Moss Agate and Cordierite Iolite Transparency

Similar to their colors, Moss Agate and Cordierite Iolite 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.