SEAGULL brooches New without any markings or tags

NICE Silverstone brooch of a flying Seagull in New condition never used like brand New . NO scratches or any defects it's nice and everything works perfect like the clasp . Not sure on maker as I couldn't see any markings of any kind . Not sure if it's sterling but I priced it accordingly , as it was not geniune sterling, and just basic alloy .