The base is the file with the rainbow ( https://www.printables.com/model/50287 ). I found it a bit to small, so I expand it using Prusaslicer by putting 225% to the scale. Afterwards the pot was split into 2 parts, the round bottom part and the top of the pot.
The bottom I have adapted it so that the indent (in the bottom of the pot) is removed. Then made a thread opening (using FreeCad).
On the top part I have added the pile of gold (https://www.thingiverse.com/thing:3084772 ) and used the rainbow as negative part to have the perfect location for the rainbow. Below of the top part the thread was added to be able to open and close this.
Prints with the colors can be perfectly done with all printers. No AMS of something like that is required.
Everything is printed with .2 layers and 10% infill.
Beside the threads, all modeling and creation is done in Prusaslicer. The .3mf file is also included in case you want to change it easily.
On the top part a negative part needs to be added, to be able to put the rainbow. I put an additional 2% of the size tot the negative volume, to be sure it can really fit.
The author remixed this model.
The pot is expanded (225% of the orginal pot of gold). Added a thread on top to be able to store real gold inside. On top of the pot a pile of gold is added to be printed.