several years ago i assited my brother gallo construction of ny with swimming pool designs, besides designing the shape of the gunite pool i was also responsible for choosing the various stones and materials to be used in these creations, i also suggested afterwards landscaping techinques and such. alot of the stones used were bluestones travertines and various marbles. in some cases we even made the pools more personal and hand engraved in cornerstones family names crests etc.