n. A sort of opaque golden-brown glass filled with specks or drops of a bright gold-color and of different sizes, used, under the name of goldstone, for various ornaments.n. A variety of feldspar, usually oligoclase, spangled with scales of hematite, göthite, or mica. It is often called sunstone. The most highly prized variety is obtained in Russia.n. A similar variety of quartz containing spangles of mica or other mineral.n. A kind of sealing-wax, of a translucent brown color and abounding in gold specks or particles.Having the appearance of aventurin: as, aventurin lacquer, etc.Also written avanturin, avanturine.