Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, LiAl2, and is a commercially important source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite,
Hiddenite
…Hiddenite is a pale-to-emerald green variety of spodumene that is sometimes used as a gemstone. The first specimens of the hiddenite variety of spodumene were recovered circa 1879 near the settlement of White…
Walnut Hill Pegmatite Prospect, Huntington, Hampshire County, Massachusetts, U.S. (size: 14.2 × 9.2 × 3.0 cm)
An almost colorless kunzite crystal (upper left), a cut pale pink kunzite (upper right), and a greenish hiddenite crystal (below) (unknown scale)