Aventurine Feldspar - Translucent to opaque Feldspar containing small inclusions of one of several shiny minerals, which give the stone a a glistening effect. A more popular form of Aventurine is of Quartz. When the term Aventurine is used alone, it refers to the Quartz type. The reddish form of Aventurine Feldspar is known as Sunstone.
(See also Aventurine)