It is part of the island walkthrough, or you can look at the solution question. Both are related questions below.
In nabooti island in Giza
nabooti island giza
The tomb is inside the Sphinx at Giza, on Nabooti Island. (see related question)
No cowboys on Nabooti Island. The masked men at Giza are tomb robbers. Get the blue lily from Blue Nile falls and swap it for a turban at Nabooti. Wear it when you go to Giza.
you get the blue gem
its in the tomb in giza.
In the Giza but you have to sell something to the middle guy in nabooti islandGOT IT
There is a written walkthrough at the related question below and a video walkthrough at the related link.
On Nabooti Island, the Blue Jewel is in the Mummy Room of the Sphinx at Giza.
Get the map from the museum and go to the plane. Fly to Giza (at the top of your map of Africa).
(*The question is not how to "get past" Giza, but rather how to beat it. See the related question.)
You jump over them.