Marble tiles can be cut using a wet tile saw, an angle grinder with a diamond blade, or a handheld wet cutting saw. Here are the steps to cut marble tiles using a wet tile saw:

1. Wear the appropriate safety equipment, such as safety glasses, ear protection, and gloves.
2. Measure and mark the marble tile where you want to make the cut.
3. Adjust the blade depth on the wet tile saw to the thickness of the tile.
4. Fill the water reservoir on the saw with clean water, and turn it on.
5. Hold the marble tile securely against the fence on the saw, ensuring that the marked line is aligned with the blade.
6. Slowly push the tile forward, keeping a steady pressure on the tile to prevent it from slipping.
7. Turn off the saw and clean up any debris before removing the cut tile.