Eye agate

a kind of circle agate, the central parts of which are of deeper tints than the rest of the mass.

See also: Eye

References in periodicals archive ?
agates from Germany, agates from Europe, eye agates, agate phenomena, agates from the Edinburgh Museum, master agate-carvers from Idar-Oberstein, pietre dura artworks made from agate, and agates from the Museum Schloss Bertholdsburg in Scheusingen/Thuringia, Germany.