Jadeite is much harder than turquoise and a bit tougher, but can
still be on the brittle side. Try using hollow rivets. You can
form a solid head at the front of the tube so it has the appearance
of a solid rivet.
Jade is a very tough material, not brittle. I knew a gentleman who
cabbed jade and he tested the stone after cutting by bouncing the
cab on the cement floor of his studio. As with any stone, if it has a
flaw in the structure, it might break, but otherwise, it is a tough
and durable stone. It has been used for tools and weapons.
Richard Hart G.G.