Tourists are allowed to take some antiques out of Egypt, but there are restrictions in place to protect the country's cultural heritage. Items that are more than 100 years old require a special export permit from the Supreme Council of Antiquities, and it is illegal to export certain items such as mummies and sarcophagi.
It is important to check with a trusted local or an expert in the field before purchasing antiques to ensure that they can be legally exported. Additionally, it is recommended to obtain a certificate of authenticity for any antique items to avoid any issues with customs.
As a side note, it is also best not to try and take any stones out of Egypt, other that gemstones. If a customs official finds stones or pieces of stone in your bags, you may be suspected of damaging one of the country's ancient monuments.