In looking at the object, it may be a better guess than you think.
Grit, how far does the nose of the object stick out? The lower lip looks like it might e able to grip the edge of a bottle and if the nose sticks out any distance at all, there would be plenty of leverage to remove the cap.
Yeah, but if you look at the back of the item, along the left edge there are some sort of solder-type marks where it looks as though something has broken off. I’d say jewelry, but they appear to be on the wrong edge.
Not deep enough, in my estimation. Also, it feels way too delicate for that.