Information on gemstones and crystals
Jet like amber is not a crystal or stone. It can be considered denatured form of coal.
Jet resembles lignite (a kind of coal) in look and appearance but is a different substance.
Like amber upon rubbing on silk or woollen clothes static electricity is produced on jet that can absorb tiny pieces of paper.
Jet takes polish excellently and a fine polish creates a very glassy luster.
Jet has been used in jewelry for a very long time.