The Black Sun is a very powerful sigil that has opened up a world of magic, first for Nazi Germany and afterward for the rest of the world. The shape of the black sun is a jagged twelve-spoke wheel. The spokes represent different esoteric paths that can be taken in order to acquire magic.
These paths were tested and determined under the guidance of one Heinrich Himmler during the German occupation of the Wewelsburg Castle. In the castle, there was a very large mosaic of the Black Sun on the ground floor of the North Tower. It was at this spot energies from many different forms of realities looped through Earth. They were utilized by the Germans in the creation of magic.
Himmler had a plan that when the Germans took over the world, a type of pre-Christian religion mixed with Christian ideology would be forced upon the people. This religion was adopted by those Germans living in the castle and it involved magic called Voliksch, which is a type of Germanic magic that was derived from pre-Christian Germanic heritage.
Volkisch magic and the calling upon the ancient powers and energies of the universe is what allowed the Germans to develop much of the magic that they enjoyed using during the war and even after when secret circles of Nazis would still meet in Germany. The Black Sun and its twelve paths of esoteric magic and knowledge would bring enlightenment and supreme magical power to many of the Nazi higher-ups including Josef Mengele and Adolf Hitler himself. This magic was also used in experimentation with Jews, who often ended up looking worse than the faces that were fused to ship beams after the Philadelphia Experiment.
The Twelve Paths of Esoteric magic are twelve mega-chakras of the universe from which magical energies can be acquired. Our sun, which is the center of our galaxy can be used to synthesize and used to create dark and light magic of all sorts. It can be used to call upon ancient entities of all sorts. It can be used to open up the skies and call upon the angels or it can be used to open up the pits of Hell and summon demons. The fact is that this neutral magic can be used for anything that you want it to be used for. This is why the Germans were obsessed with it and this why they were able to use it to create such a magnitude of magic.
The mosaic that was made on in the Wewelsburg castle acted as a portal that allowed the power of the Black Sun to remain under the control of the Nazis. When Americans began closing in and taking over, these energies were siphoned from the mosaic and placed into a relic. This relic was used at secret Nazi meetings until these were eventually found out and the relic was confiscated. The power of that relic, wherever it is, somehow ended up in this ring. We don't know if this piece was made by Americans, a separate group of Nazis, or a sorcerer that just happened to know what was going on and had a connection to the original relic. Whatever the case may be, the piece mimics the magic of the Black Sun Relic.
As I've stated before, there are very few things that are not possible when using the magic in this piece. What you are receiving is 12 hot spots of energy from the universe, as well as the ability to commandeer these energies and to use these energies to create your own magic, outcomes, realities, destinies, spells, entities, or nearly anything else your mind can come up with. Again, this is the same magic that was developed by the Nazis and it can be used as white or dark magic. It simply depends on the person using it and what they wish to accomplish.