Eudialyte is a very rare zirconium-bearing mineral. The eudialyte offered for sale here occurs in association with a suite of other zirconium minerals, at Sheffield Lake, near Kipawa, Quebec. One of the other zirconium minerals that occurs with eudialyte is vlasovite, which as also available on the Alpine Gems website (Vlasovite). Rough eudialyte occurs in massive form and is usually heavily fractured and included. A very small portion of this material is suitable for faceting, yielding gems that are typically included and fractured. Clean faceted gems of any size are extremely rare.

Eudialyte has a hardness of 5 - 5.5 on Moh's hardness scale and is fairly fragile, making its use in jewellery limited to earrings and pendants. Faceted eudialyte is considered too soft to set in rings.