This form of quartz contains inclusions of small crystals that reflect light, and which give a range of colors - depending on the nature of the inclusion. Green aventurine quartz has platry inclusions of green fuchsite mica; pyrite inclusions give a brown color; a greenish brown variety may be due to the mineral goethite. Other inclusions give bluish white. Bluish green or orange varieties.

Avemurine quartz is found in Brazil, India, and Russia. Other localities include the USA. Japan and Tanzania.

Aventurine quartz feldspar, amazonite. And jade. A stimulant, known as goldstone, has been made to imitate both aventurine quartz and aventurine feldspar. It contains small triangles and hexagons of copper held in glass. With a x 10 hand lens it should be possible to see the outlines of the copper spangles.