Not having been carved or shaped with knife or other tool.(adjective)
Natural, unmodified, pristine.(adjective)
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Use "uncarved" in a sentence
"The stone, quarried from the womb of the Aravalli, was unyielding to the chisel and the hammer, and, consequently, the walls of the palaces, both inside and out, were uncarved."
"The current carried them deeper into the underwater cavern, to uncarved rock beneath Elephantine."
"Just gestured at his lovely, uncarved assistant, whole from the get-go?"