Hi shaun9628
I don't know that much about it , but from what i have read, it seems diamonds tend to die prematurely in captivity when kept indoors if they are not provided with the opertunity to cool down enough , and exposed to higher temps 24/7 . I believe that if you provide them with an area in their enclosure that they can escape the heat when they want to then you should have no problems. Hopfully someone else may have some more helpful info about it.
Good luck.