Oh yeah I remember seeing this before. It was mentioned here once before but it was a while ago.
It's still stunning and I'd personally love to be proposed to with a ring like that.
I've heard these types of stories a lot. It's my dream/actual goal to be proposed to with a blue feather, and hopefully get a ring to match. I imagine if it's like that, a lot of anniversary gifts would probably end up being feather themed jewelry.