Aggregates are a granular material such as: sand, gravel, crushed stone, granite, and limestone. Aggregates are used in the formation of concrete for strengthening and reinforcement purposes. Different aggregates will give different colors and appearances. Check out our color samples to find out what works best for your construction project. Please remember that these materials are mined from the earth which means that there will be natural variations in color. We can’t guarantee an exact color but we will be very close to whatever range of color you choose.