The orange gem is located at the Python, represented on the game's maps by a garden hose, which can be found in the game area named "Ruigrijk".

Upon arriving at the location, the python will suddenly appear along with three scrolls on which different lines are drawn out. The objective of this puzzle is to correctly identify which scroll has the same pattern that the python has. Once the scrolls go blank, you can click on one of them to select your answer. This cycle repeats until you've got it correct three times (which might need to be done in succession, currently uncertain).

BE CAREFUL A 'cutscene' will play in which the snake will offer the gem to Pardoes. Grabbing the gem too early makes it really easy for the game to softlock itself, so make sure you're not too fast. Wait a second once the snake has let out the gem and stopped talking, and then grab it.