Popsugar Entertainment Popsugar Book Club Take the 2021 POPSUGAR Reading Challenge Don't Miss Out! Take the 2021 POPSUGAR Reading Challenge 1 April 2021 by Tara Block View On One Page Photo 35 of 296 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 35 A book with a gem, mineral, or rock in the title The Obsidian Mirror by K. D. Keenan Previous Next Start Slideshow POPSUGAR Book ClubPOPSUGAR Reading ChallengeShoppableBook LoversPOPSUGAR ChallengesBooks