Its name comes from the Arabic language, related to its lightness. It's a hard, light and brittle substance. When rubbed it becomes electrically charged. It's an organic gem, like jet, pearls or corals. It can have different colors Amber is fossilized tree resin, 25 to 45 million years old. Trees produced the resin as a protection, it felt to the ground and preserved in the earth for millennia. The resin sometimes trapped air bubbles, drops of water, dust particles or small beings, such as insects or plants. It's been used since the ancient times because of its magical, aromatic, electric and healing properties. It is a powerful amulet, with the attributes of healing diseases, dispel negative forces and attract good luck. Formerly, it was also used as a worship or adornment object. It was worn as a pendant or a necklace to relieve goitre or Tonsillitis. In the Nordic countries it is used to prevent nightmares and fears. In Mexico, for protection against evil eye. In the ancient Greece, amber was called "elektron", the origin of the word "electricity".