Hey there...
I live in Santa Clarita, Ca. and all the stone is Bouquet Stone which is mined locally (but used all over) I liked it much better than the Arizona flag and loks beautiful when stacked. As to waterline tile, I chose not to use any. The Pebbble Tec meets with the stone. I didn't want to break up the look of the Bouquet or the rocks from the spa. BUT.... where I live the water is very, very hard and I get calcium build ups and some discoloration at the water line. Nothing too too bad, and I'm probably going to have it professionally cleaned soon. If I did it over, I might have went with a slate type tile which I originally looked at