Ilvait (mineral)

Ilvait crystals, a selection of specimens of this crystallized mineral species. Ilvaite is a mineral with many collector’s items presented here with a description, one or more photos and sometimes a video. These ilvaïtes are for sale. It is a silicate, a sorosilicate of iron and calcium, with the chemical formula Ca(Fe2+)2Fe3+[O|OH|Si2O7], and a monoclinic crystal system.