So, before looking at products that appeal to you, determine what your qualifications well be; that is, what you expect from your ceramic tile in the long run. Ask yourself, “Where will I be using the tile? Inside, outside, wet areas (show, bathroom, kitchen)?”
Though just about any tile can be used indoors, it matters where you use specific types. For example, countertops are exposed to food acids or cleaning chemicals, and that calls for sealed, glazed or porcelain tiles.
Grout is also sensitive to many of the same products and must be sealed, or a special epoxy grout must be used. Epoxy grout is highly stain resistant and does not have to be sealed. Expect to pay more for both the product and installation, but in certain areas (high probability for staining) epoxy may be the product of choice.
Glazed tiles, covered with a glass coasting, can range from shiny to dull. They’re easy to clean but can be slippery when wet. Unglazed tiles can be very stylish but often contain voids (nooks and crannies) which take more time to clean. Unglazed tiles can be slippery when wet.
If you live in an area with frees/thaw cycle, whether you can use a tile indoors or out is important. Tiles are rated from low to high on how impervious they are to absorbing water. In areas with freeze/thaw cycle an impervious tile (most porcelains are included), would be appropriate. This information is either written on the back of the tile or available from a flooring professional.