Answer: Geode cut face

What you're looking at

A geode cut face is what you see when a hollow rock is sliced in half and polished to reveal its sparkling crystal interior. You'll find geodes in rock and mineral shops, museums, and collections around the world. They're prized by collectors for their beauty and by geologists for what they tell us about Earth's mineral-forming processes.

This extreme close-up photo shows the intricate crystal structure and patterns formed inside the geode. The repeating geometric shapes, layered formations, and glittering surfaces can look abstract or unfamiliar when zoomed in this tight. Without the context of seeing the full geode's outer rock shell, the crystalline texture transforms into something that puzzles the eye, making it surprisingly hard to identify at first glance.

Search for repeating geometric crystal patterns, layered mineral deposits, and areas with reflective or glittering surfaces in close-up geology puzzles.

How players did

62 players made 97 guesses. It took 13 guesses before someone got it right.

Most common wrong guesses: quartz, ice, crystal, rock, dried flower