Is this a good riven?

I've been trying to sell it for so long but no luck so far, so is it a groll or a good stat stick or what? I'm always super confused when it comes to rivens and anything about them

I've been trying to sell it for so long but no luck so far, so is it a groll or a good stat stick or what? I'm always super confused when it comes to rivens and anything about them