The Stone Sky is the third and final book of The Broken Earth trilogy by N.K. Jemisin. It follows after Hugo award-winning The Obelisk Gate, which itself follows Hugo award-winning The Fifth Season. Could The Stone Sky be three times in a row for Jemisin? Very much so as this book surpasses the prior two books in practically every way possible.
Read on for my spoiler-free review, though minor points of the prior two books are fair game.