Properties
No property table for this entry: the article it resolves to has no infobox, so Mohs hardness, crystal system and the other properties are not available. Nothing has been estimated or added.
From the Wikipedia article
Jet most commonly refers to:Jet aircraft, an aircraft propelled by jet engines Jet engine, used to propel jet aircraft Jet (gemstone), a black or brown semi-precious mineraloid Jet (fluid), a coherent stream of fluid that is projected into a surrounding medium, usually from some kind of a nozzle or aperture
The article this name resolves to is a disambiguation page: it lists other articles rather than describing a single material.
Source
Source record: crystal-compendium/jet/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Jet — revision id 1374065426. Text and properties from Wikipedia, licensed CC BY-SA 4.0.