Nero St. Gabriel has everything you need for unique flooring in a statement design. More than just a black marble tile, Nero St. Gabriel displays a stunning, one of a kind fusion of deep black and bright white veining. Each dramatic black stone tile works together to craft a modern tile floor that has both a contemporary feel and a classic look.
Castelli puts a Resin backing on some of their stones to reinforce/strengthen it during processing, shipping, and install.
This Resin backing requires the use of an Epoxy Thinset or Epoxy Additive during installation
Common stones that will have this are Nero St. Gabriel, Rosewood, Calacatta, Statuary, etc.