Egg Shells are constructed out of calcium carbonate (CaCO3) crystals.
It also has a thin outer coating which is called the bloom or cuticle. What this does is help keep out bacteria and dust. (source)
The egg shell is grainy and bumpy in its texture and is covered by around 17,000 tiny pores.
It serves to protect the inner egg and as a result, maintain its integrity
So can hamsters eat egg shells?
No they can’t unfortunately. They are not good for them to eat and may hurt their throats if the swallow it because it is quite jagged when it breaks.
A food to avoid.