Featured Stone Bead ID please

Any suggestions as to what these could be please?
Mary Contrary gem tester says Jadeite, Nephrite or Tourmaline for the brown but I don’t trust her as that’s her stock answer when she is clueless.
The blue I think are dyed quartz?
Could the cubes be unusually cut carnelian? The cubes are 9mm square. Nicely polished and quite tactile.
Thanks for looking

 

The square ones look like dyed agate, and carnelian is pretty much unbanded agate so close enough. The other looks like a really low-grade aquamarine bead, but it's hard to say from here.

 

Funnily enough, Mary did suggest Aquamarine and I discounted it but maybe she was right?
Thanks Ruth

 

Certainly possible. I've seem similar ones before, and they do make beads from opaque aquamarine. The grad Z stuff.

 

Could well be, the colour isn’t far off!