gemstone
Tumbled Jet
Lignite (Precursor: Fossilized wood, C)
AI-generated identification · may be incorrectHardness 2.5-4 on the Mohs scale, deep black or dark brown color, velvety or vitreous luster when polished, amorphous crystal structure, specific gravity 1.3-1.4.
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Physical properties
Hardness 2.5-4 on the Mohs scale, deep black or dark brown color, velvety or vitreous luster when polished, amorphous crystal structure, specific gravity 1.3-1.4.
Formation & geological history
Formed from the extreme pressure and heat processing of dead woody material over millions of years in a marine or swampy environment.
Uses & applications
Used in mourning jewelry, carvings, ornaments, and occasionally in metaphysical collections.
Geological facts
Jet became extremely popular during the Victorian era for mourning jewelry after Queen Victoria went into prolonged mourning for Prince Albert.
Field identification & locations
Identify by its remarkably low specific gravity (feels very light for its size), velvety black streak, and ability to be easily carved and polished.
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