Miniature Bonsai, Stone-Mounted, For Terrarium & Aquarium, Water Stone, Pool Stone, Large Size

I acquired these stones for bonsai accent stones or viewing stones. I do not know the type or origin.
I am selling them because they were too large for my needs.
All stones have a generally flat bottom and are stable.

- Leftmost stone:
This is a heavy, black stone that I acquired as a viewing stone. How about using it for a luxurious stone-clinging tree?

- Middle stone:
The top has a shallow depression (with an outlet) where I intended to plant some grass. While I cannot see obvious marks from cutting tools, the shape is so perfect that it may have been processed.

- Rightmost stone:
This stone resembles a Dragon's Eye stone, or a thread-strung/thread-wound stone.

In addition to stone mounting, I believe these could also be used for terrariums and aquariums.

I have been seasoning the stones outdoors with rainwater, so there are no chlorine stains.
I will inspect them before packing, but there may be some light soil dust.

Please check the size in relation to the ruler in the photo.
The white paper shown below is A4 size for reference.

Please refrain from negotiating discounts for individual sales or purchases of multiple items, except for bundled purchases.