A late Victorian locket has ivy leaves (a Victorian symbol of fidelity) at the top; roses appear below. All are hand-engraved. On the back, I see some worn hallmarks - one seems to be a harp, which tells me this locket was made in Ireland. No glass lenses remain inside.
1837 — 1901
It’s hard to pinpoint when modern-day lockets were invented, but it’s believed that they evolved from ancient amulets.