Mini Tumble Dumortierite Electroplated Silver Plate Charm. Dumortierite is a fibrous variably coloured aluminium boro-silicate mineral. Dumortierite was first described on 1881 for an occurrence in Chaponost in the Rhone-Alps of France palaeontologist Eugene Dumortier. Dumortierite is used in the manufacture of high grade porcelain.
Approx. size: 10mm x 10mm.