Andesine and Cordierite Iolite Optical Properties

Andesine

Cordierite Iolite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

colorless.

Strong trichroism: colorless to yellowish

1.3 Dispersion

Albite Optical ..

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0.70

Rank: 2 (Overall)▶

0.02

Rank: 22 (Overall)▶

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Fluorite Optical Properties

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0.044 (Anglesite Opt..)

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1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent

1.5 Refractive Index

1.543-1.564

1.542-1.578

1.6 Optic Character

Biaxial/+

1.7 Crystal System

Triclinic

Not Available

1.8 Birefringence

0.007-0.011

0.008-0.012

1.9 Clarity

Transparent

Andesine and Cordierite Iolite Optic Character

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

Compare Red Gemstones

Andesine Vs Blue John

Andesine Vs Black Opal

Andesine Vs Bloodstone Heliotrope

Andesine and Cordierite Iolite Transparency

Similar to their colors, Andesine 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, Andesine is Translucent, Transparent and Transparent to translucent while Andesine is Translucent, Transparent and Transparent to translucent in appearance.

Red Gemstones

Anorthite

Apophyllite

Aragonite

Baryte Barite

Black Opal

Bloodstone Heliotrope