Optical Properties of Grandidierite

Grandidierite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

1.2 Pleochroism

visible

1.3 Dispersion

Not Available

Rank: N/A (Overall) ▶

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.578-1.639

Check 1.578-1.639 Range Gemstones!

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

1.8 Birefringence

0.037-0.039

Check 0.037-0.039 Range Gemstones!

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Grandidierite Luster

Optical Properties of Grandidierite 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. Grandidierite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.

Grandidierite luster is the quantity of light the crystal reflects when light is incident on it. Grandidierite which is commonly found in Green color, is Gemmological Tables (2004) More from other references in nature. It possess Pearly and Vitreous luster.

Green Gemstones

Grandidierite Refractive Index

Optical properties of a Grandidierite 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 Grandidierite.

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 Grandidierite refractive index is 1.578-1.639. Birefringence value for this gem is 0.037-0.039. So if you are searching for prominent Green Gemstones, Grandidierite gem is something not miss on, since it has been a favorite pick in the gem wearing community.

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