Hello All....This is our pool. Originally there was just an inground spa with plaster finish and raised brick coping when we purchased the house a little over a year ago. We added the pool and upgraded the spa with the same finishes. This was all completed just before Halloween last year. Got to swim in it twice last year by heating the pool with propane........expensive! We used a glass tile for the waterline and the finish is Gemstone/Sandstone Blue Diamond. This past weekend the air temperature was close to 80F and with the solar running by the end of the day the water temperature was 75F. After 4 months of spa only the wife just had to get in....yeah she's tougher than me!