FONTES REFRACTORIES also sells different coloured clays used like raw materials for manufacturers of raw earth products or terracotta. Extracted directly from the quarry, these natural clays are cadmium- and lead-free, and can be used to produce food-safe pottery:
- Unprocessed clays;
- Crushed clays (particle size 0-3 mm), intended for the manufacture of decorative plasters and pottery;
- Clay mixtures for use in pottery making.