the world > the earth > minerals > types of mineral > silicates > inosilicates single chain > [noun] > pyroxene > clinopyroxenes > jadeite (3)
A name given to two distinct minerals which from their hardness have been used for implements and… jadeite, a silicate of sodium and aluminium…
One of the two minerals commonly included under the name of jade, n.2, of which it is the hardest and most highly prized variety.