I purchased these today. As you see, they retail for over 1000 dollars. They're sterling. But I have no idea what they are. They look like thick buttons, but I can't imagine their use as such. For starters, the number and sizes don't make sense for buttons (a jacket would need more buttons, a shirt would need smaller buttons, etc.)... Please let me know asap as I plan on flipping them. Also, any idea what the filling material is? Some type of stone?