Amethyst is the birthstone for February. Amethyst is a quartz that spans the purple spectrum with hues ranging from darkest purple to pale lilac. Ancient Greeks and Romans believed this stone would protect the wearer from drunkenness and promote a balanced mind. In the middle ages amethyst was associated with royalty. Amethyst was also worn by the clergy as the stone represented a deity for Christ. Now amethyst is associated with peace, stability and courage.