These are handmade parts. This is a rather large locket. You could put photos of your beloved dog/cat/idol, or stones you like, or perhaps pour resin into it for customization. The lid also seems suitable for embedding stones or pouring resin. It looks like flat pills would fit, so it could also be used as a pill case. The photo shows one dose of Nocsin Acetaminophen cut in half and placed inside. Locket / Handmade / Photo / Photo Frame / Pill Case / Gold / Antique / Parts / Cabochon / Necklace / Pendant / Pendant Top / Round / Circular / Round Shape