That is actually an interesting way to approach it. I had already thought about giving each stone a unique ID so its information and history could follow it when it changes hands. But I had not really explored how Nostr events and signatures could handle that part.
Using Blossom for photos and NIP-99 for trade listings also sounds worth looking into. I still have a lot to learn about how all of that would work together.
I have collected stones from different parts of Türkiye over the years so I could start by sharing a few of them with their stories and see whether anyone is interested.
Maybe I really should take this project off the shelf again.