Identification of individual species can be difficult. Most specimens sold as tourmaline are the species elbaite. Dravite, elbaite, schorl, and uvite are readily obtainable, but the other species may be challenging to acquire. Dealers have crystals in all sizes and colors from many localities. Matrix specimens, or crystals associated with other crystallized minerals are particularly desirable.
Crystals showing color zoning are also highly collectible.
Classic localities to look for include Elba, Italy, and the famous old pegmatites of Maine. Species of this group crystallize in the Hexagonal system, Trigonal Division. Crystals are often triangular in cross-section. Occasionally pleochroic or chatoyant. Strongly piezoelectric and pyroelectric.