The object in your photos is a metal shell-shaped jewelry or trinket box. It's hinged and opens like a clam shell, revealing a compartment inside which you can use to store small items like rings, earrings, or other delicate jewelry pieces. it's a vintage piece which is was used to store butter

Here are a few notable details:

Design: The shell shape is both decorative and functional, often used for vintage or ornate decor. The beaded edging and metallic sheen give it a classy, antique feel.

Material: It looks like it’s made of polished metal—possibly silver-plated or stainless steel—though this could also be a high-shine alloy.

Usage: Ideal for storing jewelry, especially small items you want to keep separate from others or display elegantly. One photo shows some jewelry placed inside, demonstrating its purpose well.

Style: Its aesthetic is vintage-inspired, and it would look lovely on a vanity or dresser, especially paired with the pink jewelry case seen in the background.