This is concrete that was poured with a black pigment added to the mix. This allows for the cut lines to be darker in color for the pattern chosen.
We used a tinted sealer to mottle on three different colors: a dark gray, a light gray, and then topped it with black. It made it look very aged. This is a fan cobblestone pattern engraved into the concrete.
This is after all the stain is applied for a logo at Central Fellowship Christian Academy.
Three different acrylic stains were used to achieve the speckled look. Then the "CF" and outer ring were cut out to leave pretty neat looking logo in the concrete sidewalk. There are a total of three logos around the campus.