You push the lid off.
you dont
it is in cemetary part B.
the blue gem is at giza.you go to where the tomb is.when you are finished with that the tomb will open.
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)
Mary did not open any tomb it was already open
The tomb is inside the Sphinx at Giza, on Nabooti Island. (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.
The ring is atop the Sphinx at Giza. Putting the Moonstone in the ring will open the tomb. (see related question)
use flash in the middle of the tomb
They broke the plaster sealing the tomb closed.
taj mahal has a ghost on the left tomb
The Blue Jewel is inside the tomb beneath the Sphinx at Giza. (see the related question)