I believe Emerald, but do not take my word on that. It's been in the family for some time, Mom says Emerald, but again, not sure. I do know the stones are set with open backs, usually a sign of fine jewelry.
Just took some macro, but they won't let me put them on this late. The green-stoned one is marked 925 and CNA? I believe. Can see 925 but unsure about possible maker mark. Other ring clearly marked 925.