HARDNESS: 2,5 - 4 on the Mohs scale.
MINERALOGY: The jet (name from a Turkish river) is a bituminous coal can be polished. Velvety waxy sheen, is a fossil material originating from trees (Araucariaceae) that lived in the Jurassic period. It comprises a heterogeneous mixture of organic carbonaceous materials and mineral matter, consisting mainly of vitrinite, organic compound derived from lignin, cellulose and other compounds present in vascular seed plants.
MYTHOLOGY: In ancient times women fishermen a guaranteed good fishing burning pieces of jet. The jet jewelry were prized by the Egyptians, Phoenicians, Etruscans, Romans and Vikings, although the oldest account (15,000 BC) appears in a jet pendant in the Cave of the Caldas (Oviedo). Since ancient times its protective properties were known.
PROPERTIES: Provides confidence, it helps overcome worry and depression is said, helps us achieve our goals, being tenacious and persistent. It's a great protection against negative energies.
ZODIAC SIGN: Aries, Taurus, Gemini, Sagittarius.
USES: Jewels of mourning, protective talismans, fine jewelry (cameos), meditation.