
Geode
$5
A geode is a hollow rock lined with crystals, often quartz, amethyst, or celestine, commonly sold as decorative mineral specimens in the fossils and minerals category.
Estimated value as of 2026 · Source: Fossilicious and general range from multiple sources
Fun Fact
Small quartz geodes from Morocco, about 1-4 inches, are the most affordable and popular for beginners, often sold in sets for breaking open as a fun activity.
Price History
More in Nature

$31.8M
Fossil Tyrannosaurus Rex Skeleton (Stan)
Nearly complete T-Rex skeleton auctioned for research and display.

$5M
Moon Rock Sample (From Apollo 17 Mission)
Lunar basalt specimen collected during humanity's final Apollo mission in 1972.

$3.5M
Hope Diamond
A 45.52-carat deep blue diamond with a legendary curse.

$2.0M
Gold Bar (400 oz)
A standard 400 troy ounce gold bar, the kind stored in Fort Knox.