sunstone

noun

A variety either of oligoclase or of orthoclase, or when green a microcline feldspar, showing red or golden-yellow colored reflections produced by included minute crystals of mica, göthite, or hematite.

Aventurine feldspar. See under aventurine.

A translucent form of feldspar having flakes of hematite, used as an ornamental stone.

A translucent quartz spangled with bits of mica or other minerals.