Hi all. 

I attended last year, but sadly I will not be there this year. 

I bought some really cool dice last year (pictured), from a vendor I can’t remember (it wasn’t Chessex). I lost one from my set of three and I’d love to have it back. Does anyone recall who sold these dice? Thanks!

I don't recognize the specific pattern, but it looks like the kind of things Q Workshop makes. I'm not sure they sell single dice, though, only sets.

Q-Workshop, ‘Forest’ set.

I’m a Q-Workshop fanatic, btw... glad I could help.

https://q-workshop.com/en/rpg-dice-sets/440/forest-3d-green-black-dice-set-7?search_query=Forest&results=33

I heard you can buy dice at GenCon.  Hope this helps.