IPA: /ʌnˈwɜrkt/
KK: /ʌnˈwɜrkt/
Describing a material that has not been changed or shaped in any way from its natural state.
The unworked stone was perfect for the archaeological study.
Unworked → It is formed from "un-" (meaning not) and "worked" (from Old English "weorc", meaning to perform or labor). The word "unworked" means not having been performed or labored upon.
Think of 'not' ('un-') having been 'performed' or 'labored' ('worked') — that's why unworked means something that hasn't been worked on.