Hi Sherrie
You asked the question about rewards for levelling up?
Morpheus got back to you, here is his answer, and hope it helps you. Thanks, Allie :)
"From level 80-90, you receive 9 diamonds.
From 91-98, you receive 10 diamonds.
Every level also awards a slightly larger chip stack.
Currently it stops at 98, with 32250 chips and 10 diamonds."