Tourmalated quartz beads are cut from quartz that is imbued with dark needles of tourmaline. Also known as black hair quartz beads, these beautiful semiprecious beads are in the family of macrocrystalline quartz - that is, quartz with crystals that are large enough to be recognizable with the naked eye. As late as the 16th century, many people thought quartz to be fossilized ice, and quartz is often cool to the touch due to its high thermoconductivity. Quartz is said to be the universal healing stone, and quartz beads are reputed to promote hope, happiness, and optimism. Black tourmaline is a complex silicate of boron and aluminum, and is said to dispel negative energy and bring good luck to its wearer.