Sith Holocron

"Sith holocrons were devices used by the Sith that were capable of containing information. Although their function was similar to that of Jedi holocrons, they usually were pyramids or tetrahedrons, whilst the Jedi holocrons were of cuboid shape, and were accessible only to those who were able to control the dark side of the Force. The Jedi Order considered these to be some of the most dangerous artifacts in the galaxy". (Obtained from http://starwars.wikia.com/wiki/Sith_holocron)

Sith Holocrons seem to be all pyramid shaped with gold accents and ominous red glow, a perfect contrast to the cube shaped Jedir Holocron with a calming blue glow.

This is a simple model, that uses simple tricks to achieve it's look. For the pyramid, print it in vase mode, without no bottom layers, if you have problems with adhesion, add a brim but don't add bottom layers, you need the bottom to be hollow so that you can place a led tea light inside. For the “writing”/"symbols" simply print the provided pdf file in transparency paper, afterwards cut and glue it on the inside of the pyramid. The faces (print 4) should be glued on the outside of the pyramid. To finish it off just place a small tea-light inside of the pyramid (don't glue the pyramid to the base).