Directly smelted stacked stone to brick has the same 1:1 ratio as iron and copper ore: https://ibb.co/qYQK7Gd
I like the convenience, I'm just curious about how it works out that way :)
Edit: better screenshot of duping stone bricks by stacking => unstacking the same 50 stone: https://ibb.co/cXvd0Lh
Freeplay save with my mods: https://drive.google.com/file/d/1m-x1OaWJe5yufmHEo2f4ESZ_1cptlqTm/view?usp=sharing