Fun Facts About Diamonds

Fun Facts Daily · Apr 22, 2026 · 16m

Diamonds are carbon-based gemstones formed deep within the Earth's mantle under extreme pressure and heat between one and three billion years ago. Beyond Earth, extreme atmospheric pressures on ice giant planets like Uranus and Neptune cause methane molecules to break down, resulting in "diamond rain" where microscopic crystals fall toward planetary cores. In the far reaches of space, celestial bodies such as the white dwarf star BPM 37093—nicknamed "Lucy"—have evolved into massive crystallized carbon structures, effectively becoming the largest known diamonds in the universe.

While diamonds…