How cut marble mosaic squares without crumbling?

[Terry the tiler]

I done a bathroom with these exact same tiles before Xmas, used my Dewalt d24000 went through them cleanly.

 

[Terry the tiler]

 

[Stevev]

variable speed grinder may help. Dont try to cut them in one go, go over them a few times, not pressing down hard, using the weight of the grinder.

Angle grinder???

 

[MTiler]

Angle grinder???

Yep

 

[GAZ5518]

I second that "Yep"😕