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Cordierite Iolite
Cordierite Iolite

Chrysoprase
Chrysoprase



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Cordierite Iolite
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Chrysoprase

Cordierite Iolite and Chrysoprase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Vitreous, Waxy
1.2 Pleochroism
Strong trichroism: colorless to yellowish
AbsentWalter Schumann
1.3 Dispersion
0.02None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent, Translucent, Opaque, Translucent to nearly opaque
1.5 Refractive Index
1.542-1.5781.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.008-0.0120.004
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Cordierite Iolite and Chrysoprase Optic Character

Cordierite Iolite and Chrysoprase optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cordierite Iolite and Chrysoprase 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 Cordierite Iolite and Chrysoprase 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.

Cordierite Iolite and Chrysoprase Transparency

Similar to their colors, Cordierite Iolite and Chrysoprase 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, Cordierite Iolite is Transparent while Cordierite Iolite is Transparent in appearance.