The Moonstone fits in the ring atop the Sphinx, and opens the locked door into the tomb.
(see related question)
Go 2 the top of the pyramid and use the moonstone
The Moonstone will open the Sphinx. Climb to the top of the Sphinx and put the stone in the ring there.
The Moonstone is in the bag. Call Vince on his phone and grab it. You can use it to open the tomb in the Sphinx.
The moonstone is in Vince's bag at Giza. You have to call him on your cellphone to distract him.How to get there :Go to the Mountains of the Moon and get the cellphone from the cave at the top. Go to Blue Nile Falls and get the Egyptian Lily, and swap it for a turban at Nabooti. Go to Giza and wear the turban to get a shovel. On the shovel there will be Vince's phone number (555-6789). After you talk to Vince, call him to distract him from the knapsack.Next :Put the Moonstone into the ring atop the Sphinx, which will open the sealed door.
The Moonstone is in Vince's backpack. Use your cell phone and dial 555-6789. When he is distracted, take the Moonstone from the bag. (see related question)
Take the Moonstone from his bag. It will open the Sphinx.
Use the Moonstone to enter the Sphinx, and solve the three challenges there. The Blue Jewel is in the Sphinx.(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)
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)
Get the Moonstone from Vince's knapsack by calling him on your cell phone (555-6789). Climb to the top of the Sphinx and place the Moonstone in the ring there. This will open the door to the tomb under the Sphinx. (see related question)
you call the guy in Giza with the phone and the number that is on the shovel. Then you go to his backpack and get the moonstone, and you use it on top of the weird building/statue and it will open.
The "Moonstone" that the tomb raiders have recovered. It is in the bag by Vince, the bad guy at Giza. Use the turban to get past the guards, and the cell phone to call Vince at 555-6789. When he leaves, get the Moonstone and climb up the Sphinx.