Well-made vintage Spider brooch,
likely made in the early to mid-c20th in an older style.
Large brooch, textured silver-tone metal set with faceted Aurora borealis type crystals / rhinestones.
(gentle rainbow.effect crystals).
The metal might be silver but no marks and if it is, then not a sterling grade.
Safety catch pin.
About 5.8cm long.
Does need some polish / clean but otherwise very good condition.