Yonta Prime was a statue carved from a deep black substance that absorbed light better than almost any other. It eventually came into the possession of the Sith Lord Darth Sidious, whose public persona was Senator Sheev Palpatine of Naboo. Sidious intended to display the statue in the Supreme Chancellor's office.
The Yonta Prime was mentioned in the novel Queen's Peril by E. K. Johnston. The next book in Johnson's Star Wars: Queen's Series, Queen's Hope, featured a black stone sculpture kept in Palpatine's office as Chancellor, with that stone able to absorb Force lightning. While that sculpture matches the description of the Yonta Prime from Johnson's earlier book, no source has directly connected either.
The Yonta Prime was mentioned in the novel Queen's Peril by E. K. Johnston. The next book in Johnson's Star Wars: Queen's Series, Queen's Hope, featured a black stone sculpture kept in Palpatine's office as Chancellor, with that stone able to absorb Force lightning. While that sculpture matches the description of the Yonta Prime from Johnson's earlier book, no source has directly connected either.