Stylish black haematite is set off by purple cat's eye beads, creating a glamorous accessory for evening wear. Can be worn as a long necklace or as a choker. This necklace is over 3 feet long and can be worn as a long necklace or a choker. Matching haematite bracelet available! This necklace includes 27 haematite beads. Haematite is a volcanic substance which is naturally magnetic, providing 1200 gauss (120 mTesla) of magnetic therapy.