Surprise Engagement...help me

So I️ want to surprise my boyfriend this Christmas by proposing to him...and I️ need help we are a bit different (hence me proposing)...but I️ love him so much and just want to spend the rest of my life with him.

Note: we have spoken about marriage and we want to be do it so it’s not like he really doesn’t, I️ just want to do it first...

So help me ladies...which ring?

He likes different looking jewelry he doesn’t want something that looks like what everyone has...

Help...which ring would you choose...thank you