The present disclosure provides a particulate matter comprising particles, each particle including a polymer blend of a first polymer and a carrier polymer, the first polymer has a melting flow index (MFI) equal or below 0.1g/10min, the carrier polymer has a MFI greater than the MFI of the first polymer and the first polymer and the carrier polymer have a w/w ratio of between 2:98 to 90:10. The present disclosure also provides a plastic article comprising the polymer blend and having a lusterless surface and a non- homogenously dispersed translucent aggregates, a process for the preparation of the plastic article and a concrete-like plastic article.