After you have fineshed the fox, chicken and the feed there is a secret that there is a hidden bush on the right side of the warterfall go there and there minght be a GEM!
The green gem is in the white temple, how to get it is you get the bottle and fill it with the sand below where the monkey is.
the blue gem is at giza.you go to where the tomb is.when you are finished with that the tomb will open.
you get the blue gem
its in the tomb in giza.
nothing
YOU GO TO DIMOND MINES
i know that there is white,blue,green,purple and red
If you mean the sapphire, the sapphire is in Rocket Warehouse on Chrono Island.
It is in the tomb of Giza after you go up the falling floors
The blue JEWEL, one of the five missing JEWELS on Nabooti Island, is located inside the tomb in the Sphinx at Giza. (see related question)
you see a zombie and you take the blue gem from its hands.
You push a stone over and jump up