Water Etched Quartz From An Old Collection In Val Di Funes, Trentino Alto Adige, Italy- Collectors Piece, Home DecorWater Etched Quartz From An Old Collection In Val Di Funes, Trentino Alto Adige, Italy Collectors Piece, Home Decor Weight 45g Size 4. 5cm by 3cm Thickness 3cm These crystals have etched surfaces. Etching can form in most varieties of Quartz. The etching is caused by water during the crystals growth cycle, or by mineral inclusions since dissolved away. Quartz is the most common and widely distributed mineral in the earths crust. It consists of oxygen