Eudialyte is a fairly rare mineral. It has a poor crystal habit, so when crystals are found, they are prized by collectors. However, it is very attractive when polished for use in jewelry. It has a deep red color in a matrix of black, gray and white.
The Kola Peninsula, Russia, is the locality which produces much of the eudialyte seen on the market today. Eudialyte is a source of zirconium.