The mineral beryl is beryllium aluminium cyclosilicate with the Be3 Al2 (SiO3)6 as its chemical formula. The Hexagon shaped beryl crystals may vary in size from very small to very large, several meters in size. Terminated crystals are relatively rare. Pure beryl is colorless, but presence of impurities can make it green, blue, yellow, red or white. It is New Hampshire’s state mineral.

Some of the largest beryls found include one massive crystal with dimensions 5.5 m by 1.2 m (18’x4′) weighing 18 metric tons. As of 1999, the largest known crystal of any mineral in the world is a crystal of beryl from Madagascar, 18 meters long and 3.5 meters in diameter.

Beryl occurs in Ural mountains, Colombia, Norway, Austria, Germany, Sweden, Ireland and Russia. Brazil, Colombia, Madagascar, South Africa, Mozambique, Zambia, California, Colorado, Connecticut, Idaho, Maine, New Hampshire, North Carolina, South Dakota and Utah.