Standard built-in tools like Windows Explorer or macOS Archive Utility often cannot handle .001 split files. You should use a dedicated archive manager:
If any parts are missing, the extraction will fail with an "Unexpected end of data" or "Can not open file" error. georgian treasures.7z.001
only the file ending in .7z.001 . Do not select the other parts. Standard built-in tools like Windows Explorer or macOS
If you get a "CRC failed" error, one of the parts (not necessarily .001) is likely corrupted. You may need to re-download the specific part mentioned in the error log. georgian treasures.7z.001