mineral
Demantoid Garnet in Matrix
Andradite garnet, Ca3Fe2(SiO4)3
AI-generated identification · may be incorrectHardness of 6.5-7 on Mohs scale, vibrant green to brownish-green color, adamantine to greasy luster, isometric crystal system, no cleavage.
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Physical properties
Hardness of 6.5-7 on Mohs scale, vibrant green to brownish-green color, adamantine to greasy luster, isometric crystal system, no cleavage.
Formation & geological history
Formed in serpentinized ultramafic rocks through metasomatic alteration and contact metamorphism in ophiolite complexes.
Uses & applications
Prized gemstone in fine jewelry, highly sought after by mineral collectors due to its rare green hue and high dispersion.
Geological facts
Demantoid means 'diamond-like' in German, referring to its exceptionally high fire and brilliance, often exceeding diamond.
Field identification & locations
Identified by its vivid green color, high refractive index, and characteristic 'horsetail' inclusions of chrysotile fibers when viewed under magnification.
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