Would be really useful to see the actual certificate, right?
Good news is that help is at hand.
In the metadata file, you'll see something like:
Then there's the actual certificate info. which is in Base64.<KeyDescriptor use="signing"> <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#"> <ds:X509Data> <ds:X509Certificate>
Copy it - the stuff between the open and closing ds:X509Certificate tag.
Now paste that into an editor - Notepad++ is my poison of choice.
Then save that as a .cer file.
Now double-click on the file in Explorer.