The Gemstone is by the left of a lonely cliff as you can see. Just walk up to that very spot, three steps to the left from the lonely cliff. Then you'll find it, it's buried in the sand, inside a wooden box. Take it and it will reveal Zakharukh's Pyramid.
So off you go back to Waset Village then pass the Ruined Temple and head west-wards of the river. Keep going south-west till you see a small pyramid and enter it.
The pyramid is like a maze, don't get yourself lost. In there you'll encounter enemies too:
Enourmous Grundocerous Undead Warrior
Health: 200 Health: 200
Items: Stamina Potion Items: Stamina Potion
Ugh, the maze in the pyramid is a real brain-squishing puzzle! I got lost somewhere now, let's try to find my way again. Now, I SUPPOSE there will be a staircase somewhere, but it is not guaranteed. Anyone who knows the way outta here please help before I get stuck for life! Before I find my way out it'll take me quite a long time, gimme a few days or even weeks. I'll write it down as soon as possible.
The pyramid is like a maze, don't get yourself lost. In there you'll encounter enemies too:
Enourmous Grundocerous Undead Warrior
Health: 200 Health: 200
Items: Stamina Potion Items: Stamina Potion
Ugh, the maze in the pyramid is a real brain-squishing puzzle! I got lost somewhere now, let's try to find my way again. Now, I SUPPOSE there will be a staircase somewhere, but it is not guaranteed. Anyone who knows the way outta here please help before I get stuck for life! Before I find my way out it'll take me quite a long time, gimme a few days or even weeks. I'll write it down as soon as possible.