Optical Properties of Goethite

Goethite

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1 Optical Properties

1.1 Luster

Adamantine

1.2 Pleochroism

VisibleArthur Thomas

1.3 Dispersion

Albite Optical ..

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Not Available

Rank: N/A (Overall)▶

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Fluorite Optical Properties

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0.044 (Anglesite Opt..)

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1.4 Transparency

Gemstones (2009)

1.5 Refractive Index

2.26-2.398

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

1.8 Birefringence

0.138

1.9 Clarity

Gemstones (2009)

Goethite Luster

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

Goethite luster is the quantity of light the crystal reflects when light is incident on it. Goethite which is commonly found in Brown, Brown, Reddish, Brownish, Yellow, Brown, Reddish, Brownish, Yellow color, is Gemstones (2009) in nature. It possess Adamantine luster.

Brown Gemstones

Goldstone

Grossular

Hessonite

Hibonite

Jacobsite

Jadeite

Goethite Refractive Index

Optical properties of a Goethite 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 Goethite.

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 Goethite refractive index is 2.26-2.398. Birefringence value for this gem is 0.138. So if you are searching for prominent Brown Gemstones, Goethite gem is something not miss on, since it has been a favorite pick in the gem wearing community.