one of the jewls is somewere in the piramid and you use the magnifing glass to find the right one
in the jewel mines on the lower center of the map.
The white jewel is the one with a triangular sign on it. You can find it on the left side in the middle, the second jewel from the left. Its not on the bottom or top, its on the middle left.
At the end of the Diamond Mine, you find the white jewel among the diamonds by using the small magnifier at the bottom right. The jewel has a triangular symbol on it. When you see it (third jewel from bottom left), you can pick it up.
There are 5 jewels to find on Nabooti Island. # The purple jewel (Blue Nile Falls) # The red jewel (Mountains of the Moon) # The green jewel (Kaya Forests) # The blue jewel (Giza) # The white jewel (Diamond Mines)
It is on the jewel. The jewel is in the lower left middle. Use the little magnifying glass in the bottom right corner to find it.
lower left corner
The white jewel is in the diamond mines mine, look for a white jewel with a special mark on it
It is in the Diamond Mines, mixed in with some diamonds. To find which one is the jewel, use the magnifying loupe at the bottom right to examine the diamonds. The one with the triangular marking (second from bottom left) is the white jewel.(see the related question)
green
White Jewel
the setting of the book Jaguar's Jewel.
At the conclusion of the Diamond Mines, you will find a bunch of diamonds together. One of them is the white jewel. To find out which one, use the Magnifier loupe at the bottom right of the screen. The white jewel has a triangular inscription on it, and it should be one of the three stones at lower left. When you see it, click "take" to pick it up.