Rosewood is a one of a kind marble quarried in Mexico. The stone is defined by an off-white background with eye-catching veining unique in every piece. The colors in this stone are several but notably burgundy, rose and soft blues.
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.