Whether or not ceramic tile is conductive depends on a few key factors:
1. What the ceramic is on: If the tile floor sits on a concrete slab or directly on the ground, the energy could come through. However, if the tile sits on plywood or some other kind of wood, plastic, or vinyl understructure, you are not likely to get any conductivity.
2. Type of tile: Ceramic tile with a glazed finish on the surface will, like glass, probably prevent the Earth’s energy from coming through. An unglazed ceramic surface has a much higher likelihood of being conductive.