Jet
Jet is an organic mineral recognized among collectors for its crystal form and distribution.
About Jet
Jet is classified as an organic mineral in the organic gemstones (not a mineral group) and has the chemical formula Lignitic coal (fossilized wood) — not a mineral. It crystallizes in the amorphous system and is relatively soft, requiring careful handling.
Identification & care
Jet typically forms massive, often retaining wood grain structure. Its color is typically intense black. The luster is waxy to resinous, velvety on polished surface, the streak is brownish black, and specimens are typically opaque. The fracture is conchoidal, which is one of its key identifying features.
Collector context
Collector notes
For decorative mineral collectors, Jet is appreciated for its visual character.