What is the difference between unsealed & presealed terracotta tiles

Our raw, untreated terracotta parquet is shown above. An invisible sealer that doesn't discolour the tiles can be used to seal the unsealed tiles.

The terracotta parquet beneath Baked Earth presealed terracotta that has been coated with stone sealer silicone. The presealed terracotta are suitable for both indoors and outdoors, the stone sealer silicone is incredibly resilient. The tiles have a deeper, more rustic appearance.