Unworked

adjective

1. Yet to be altered, carved, milled, worked, or otherwise changed from its natural or crude state.

   "For years there stood in the sculptor's studio a two-ton block of unworked Italian marble."

2. Describing an unaltered material found associated with human tool-making or other cultural activity.

   "Dozens of unworked obsidian cobbles were found buried with the deceased."