What is this?

[bloom.rotten]

 

[Mr. Mojo Rising]

It looks like 2 rocks on a bucket lid.

 

[BonnieB]

What are you referring to?

 

[Fish Fan]

I saw your other post, and I'm guessing this is some of the rocks you got used from PetCo? Likely, they are man made, but could be used if given a good bleach cure.

 

[bloom.rotten]

What are you referring to?

The circular parts of the rocks. Check my other post for more context pls

 

[Evil1]

They are the other half of the magnet to secure the frag holder to your glass. Frag holder inside and other magnet on outside. These type of decode are ment to be placed on the glass in a place of your liking. Do you have the other half of the magnet's?

 

[Dread Pirate Dave]

It looks like the mortar was stamped when the rock was made. Any company name on them?