Silver Swallow Bird-shaped Crystal Embellished Stone Obi Clasp Brooch

This item was stored with jewelry at my grandmother's house. I don't know much about it.
I believe it is an obi clasp (for kimono).
It does not have any metal fittings like needles.
No engravings or markings.
Size approximately 4 x 3 cm.
Please note that these are amateur measurements and may have slight errors.
No missing stones.
Personally, it looks beautiful, but it feels like it may have been used a few times.

Please only purchase if you understand that this is a used item.