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 four challenges are the dashes, the blocks, the collapsing floors, and the sand statues.
The Mountains of the Moon are one of the seven locations you can fly to. The red jewel is in an ice cave there.
A picture of moonstone can be found under an image search on the internet. A picture of moonstone can be found in a book amount minerals and gemstones.
a moonstone gem is a stone that looks white like the moon
first find a kecleon shop in a certain dungeon and than on the red rug it might have a moonstone get it pay for it (it is 1000$) and than you got your moonstone!
The Moonstone will open the Sphinx. Climb to the top of the Sphinx and put the stone in the ring there.
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
Take the Moonstone from his bag. It will open the Sphinx.
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)
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.
It isn't the pyramid, but the Sphinx that you climb up, to put the Moonstone into the ring. (see the related question)
The Moonstone. It is in the knapsack that Vince has. If you call him on the cell phone, you can distract him and get it. (His number is on the shovel.)
The ring is atop the Sphinx at Giza. Putting the Moonstone in the ring will open the tomb. (see related question)
The moonstone is in Vince's bag. You will need to distract him by calling him on the cellphone (the number is on the shovel, 555-6789).