What are the chances that an item bought from an Antique Shop in Join Avenue is a treasure?

Question

If you can, try to find the the chances per rank.

If you don't know, when buying a item from an Antique shop, it must be appraised. I usually get Hard Stones, Shards, and Heart Scales. I got a Big Nugget and a Nugget before. Question is, what is the chance?

Answer 1

Antique Shop - Sells a RANDOM selection of items including PokéBalls, Evolution Stones etc.

Basically, it's luck. You can, however, soft reset and get different items every time.

Source: Serebii

Comments

Edit if you actually get chances.