Titanite - Sphene (mineral)

Titanite crystals, a selection of specimens of this crystallized mineral species. Titanite is a mineral with many collector’s items presented here with a description, one or more photos and sometimes a video. These titanites or sphenes are for sale.
This is a silicate, a subgroup of the nesosubsilicates, with the chemical formula CaTiSiO5, and the monoclinic crystal system.