First I love this company. They were dependable and performed with professionalism. However my choice of interior coating was Mother of Pearl. I found that in my case that the Pearl did not flow through the total area. It kind of gathered in certain spots. Being in a covered Az. room the coating did have occasional bubbles that surfaced and there were stones that some how got caught in coating before it dried. If I would choose again it would have metallic flecks scattered through the surface. This would have enhanced the finished product. We had field stone laid outside at the same time and we were more that satisfied with the out come. We chose clear concrete between the joints and everyone raves about how realistic the stones look.