Blackfriars is a natural granite thin stone veneer in the castle rock style.  The stone is known for its darker tones and tight grain.  The individual pieces of Blackfriars have some lighter (almost white) undertones that can be seen upon closer inspection.  Blackfriars is a somewhat rare stone as it is labor-intensive to produce. The initial creation of the Blackfriars product came from a customer request for all darker colors.  It is one of the few products we make by sorting the colors of stone.  As the pieces of natural granite are split open, the darkest pieces are manually sorted and set aside to create Blackfriars.