SCP-093, also known as, “Red Sea Object” is an object with paranormal properties contained by the fictional SCP Foundation.

It is a red stone disc with various markings engraved into it, but will change color if someone is holding it. It can open up a portal to a strange dimension if placed on a mirror.

For a more in-depth explanation of this entry, follow this link to read the original article: https://scp-wiki.wikidot.com/scp-093