Hi All, I thought I would post this because I searched and searched and could not find the answer. I emailed Stonescapes to get the correct information and noticed there were a few posts with the wrong info on here. Since I am just now in the process of having a pool built, I figured others were too and were searching for similar information, so here it is. Puerto Rico blend is the addition of iridescent glass beads and touch of glass is the addition of colored beads. For example if you wanted Aqua Blue Touch of Glass, you would have blue glass beads added, if you wanted salt and pepper touch of glass, you would have black glass beads added. Puerto Rico blend is just adding iridescent beads, (no particular color) Hope that helps. This gives the same affect as abalone shells.