From Ricochet Wiki

The bricks are the basic building blocks of every level. To complete a level, all breakable bricks need to be destroyed.

All environments come with their own sets of bricks that have different designs and colour palettes. Each environment also has a uniform brick size (with the exception of Canvas) shown in the table below.

There are also several different types of special bricks (WIP)
Environment Brick Width Brick Height
Xtreme 32 18
Underwater 46 24
Volcanic & Pod People 40 24
Mayan 40 24
Alien 40 40
Alien Vista 44 27
Canvas (basic) 39 20