Optical Properties of Cordierite Iolite

Cordierite Iolite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Strong trichroism: colorless to yellowish

1.3 Dispersion

Albite Optical ..

⊕

▶

▼

0.02

Rank: 22 (Overall)▶

▲

Fluorite Optical Properties

⊕

▶

0.044 (Anglesite Opt..)

◀ ▶ ADD ⊕

1.4 Transparency

Transparent

1.5 Refractive Index

1.542-1.578

1.6 Optic Character

Biaxial/+

1.7 Crystal System

Not Available

1.8 Birefringence

0.008-0.012

1.9 Clarity

Transparent

Cordierite Iolite Luster

Optical Properties of Cordierite Iolite are its behavioral responses towards light. While few optical properties can be identified with naked eyes, other require special instruments by the gemologists to identify them. Cordierite Iolite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.

Cordierite Iolite luster is the quantity of light the crystal reflects when light is incident on it. Cordierite Iolite which is commonly found in Violet, Blue color, is Transparent in nature. It possess Vitreous luster.

Blue Gemstones

Covellite

Cyprine of Berzelius

Diamond

Dravite

Dumortierite

Elbaite

Cordierite Iolite Refractive Index

Optical properties of a Cordierite Iolite crystal are responsive to the small changes in composition and strain within its crystalline structure. Absolute diligence is therefore necessary during cutting and polishing of the gemstone. All such optical properties are majorly influenced by Physical Properties of Cordierite Iolite.

As we are well aware, refractive index is the phenomenon which is related to bending of light through a medium (crystal). It is used in qualitative analysis of gemstones by gemologists Besides, few gemstones exhibit property of dual refractive indices. This dual nature is known as Birefringence. The value of Cordierite Iolite refractive index is 1.542-1.578. Birefringence value for this gem is 0.008-0.012. So if you are searching for prominent Blue Gemstones, Cordierite Iolite gem is something not miss on, since it has been a favorite pick in the gem wearing community.