Gem-ID.com

Professional Gemstone Identification Database

Filter Properties

Color

Mohs Hardness

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Refractive Index (RI)

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Specific Gravity (SG)

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Birefringence

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Optic Character

Singly Refractive (SR) Doubly Refractive (DR) Aggregate

Uniaxial / Biaxial

Uniaxial Biaxial

Isotropic / Anisotropic

Isotropic Anisotropic

Pleochroism

None Dichroic Trichroic

Crystal System

UV Fluorescence/Phosphorescence

Color-Change Phenomena

Anomalous Double Refraction (ADR)

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