Thoughts On The Roswell Rock?

Personally, I believe it's a possibly legitimate artifact. However, I find it weird beings that operate craft capable of alleged FTL speed would be playing around with rocks.

From what I understand, this was a forgotten piece recovered from the Roswell crash site. It has very interesting traits about it, from the way it seems to have been made to the magnetic properties it possesses. Even more interesting is the design that rests atop it. This design was also seen in a crop circle around Lidington Castle in 1996. The design has some tribal-like designs that surround a sun and a moon.

What do you guys think about this? Any information regarding this piece you may have that some people might not know about?