That's calcium carbonate, present in the raw materials used to make concrete statues, rising to the surface in a process called efflorescence. Rain will eventually wash it away.

Concrete statues or small stone ornaments are “always worth considering,” says Bailey. Of course, the resale price varies depending on the type of statuary you find.

As winter approaches, ornamental structures and decorations need some attention. Most materials, even solid stone, are not impervious to the damaging effects of winter weather. Plastic gets brittle… ...

A pair of 8-foot-tall limestone statues that stood sentinel in Branch Brook Park in Newark have been replaced with newly fashioned cement replicas that arrived from Pennsylvania earlier this month ...