The leading distinction between Saltillo and Zellige tile, even so, is GLAZING. Ceramic glaze is definitely an impervious layer or coating of a vitreous substance which has been fused to your ceramic overall body as a result of firing (thanks wikipedia for breaking that down so just). All-natural & Neutral https://www.a-zbusinessfinder.com/business-directory/Zia-Tile-Los-Angeles-California-USA/33295367/