Silvergate real stone veneer is a blend of natural Wisconsin quarried limestones.  This product showcases stone from multiple quarries and different faces of the stone within the quarries. Different faces of the stone refers to the different sides or parts of the limestone slabs.  The tops and bottoms of the slabs weather over time, whereas, the interior part does not weather at all.  With Silvergate, the gold and larger darker grey pieces are the tops and bottoms of the slabs or what is called the bedface.  The flat grey pieces are the interior part of the slabs and are referred to as machine cut or split face.