In the Sand Room, you will pull the switch on the 4th column (far right), then the 2nd, then the 3rd, then the 1st. The sarcophagus will reveal the Blue Jewel.
The key to finding this order is the dots on the bellies of the small statues. Pull the related switches in that order : one dot, two, three, then four. You can also use the wall diagram, which shows the symbols of the crypts in the order that their switches should be pulled.
(see related question)
The Sphinx is at Giza on Nabooti Island (Egypt is in north Africa). The blue jewel is in the tomb beneath the Sphinx.
The tomb is inside the Sphinx at Giza, on Nabooti Island. (see related question)
On Nabooti Island, the Blue Jewel is in the Mummy Room of the Sphinx at Giza.
It is the final challenge in the tomb under the Sphinx on Nabooti island. (for the solution, see the related question)
There are no keys on Nabooti Island. The Sphinx at Giza is opened by the Moonstone that Vince and the tomb robbers have found. It is placed in the ring atop the Sphinx. (see related question)
its what blocks you step on sweetie
Vince is Vince Graves, fortune hunter and tomb robber. He is looting the tomb of the Sphinx at Giza on Nabooti Island. He has the Moonstone in his bag, and if you get it, you can open the Sphinx. (see related question)
The Moonstone will open the Sphinx. Climb to the top of the Sphinx and put the stone in the ring there.
If you are really lost go on youtube and search poptropica nabooti island it should help you
The blue jewel for Nabooti is in the tomb inside the Sphinx at Giza. (see related question for solution)
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)
The Blue Jewel is in the tomb inside the Sphinx. You will have to solve the four challenges to reach it. (see the related question)