should contact Ransom Beegles at R Design. He was the landscape architect on this project http://www.rdesignstudios.com Good luck!
I was the lighting designer on the project, but you may want to contact the architects. You can find them here: http://www.houzz.com/pro/mosaicarch
want to contact the architect at http://www.mosaicarchitects.com/ My guess is that its some sort of buff colored flagstone.
Contacts - quotes behind supplied by -
Mike olive - 0422115811. 23rd April
Lifestyle solutions -Peter - 41555520 24th April
Touch of paradise - Barry or cindy- 41597022 or 0408067606 7th April kenny is in charge of steps and flat across to second steps all done in meribu timber