I've often brought back Jade with rope knots to my friends and family in America. They always love it, and even if they didn't they like the offer. It's a nice gift!

With cross-cultural gifts, I believe it is the intent that means more than the gift itself, because jade has a significance to the Chinese that needs to be expanded on to your intended recipient(s). I think it'll be fine, but of greater value would be a(n) (perhaps brief) explanation of what it symbolises (albeit in general terms) along with any accompanying traditions and cultural significance.

to each his own, i think. it would be better if you can give us a general idea what they look like by adding the link of the pictures of those jade items. anyway, it's the thought that counts.