Physical Features
1. Color- Black, brown.
2. Streak- Black to dark brown.
3. Luster- Velvety to waxy.
4. Cleavage- None.
5. Transparency- Opaque.
6. Fracture- Conchoidal.
7. Hardness- 2.5.
8. Forms- Amorphous.
Jet has been classified as a coal because of it's high carbon content. Jet is a fossil wood belived to have formed as a result of being waterlogged and then buried in oxygen deprived mud of the ocean floor for millions of years. Today Jet occurrences can be found in sedimentary marine rocks all over the world. Just the other day when digging in my garden I came across a real nice piece, and of course I saved it. Maybe one day, i'll use it in a ring. Jet is well known for it's amazing uses as an ornamental, such as jewlery.
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