
Aventurine
Aventurine is a translucent quartz mineral variety known for its sparkling inclusions (aventurescence), commonly green, used in jewelry, carvings, and as healing crystals.
Estimated value as of 2026 · Source: Average from gemstone retailers like GemstonesForSale and RoughStone.Rocks for t…
Fun Fact
The name 'aventurine' comes from the Italian 'a Ventura,' meaning 'by chance,' referring to its accidental discovery when copper filings were spilled into molten glass, mimicking the stone's shimmer.
Price History
More in Nature

Californium-252 (per gram)
Californium-252 is a synthetic radioactive element produced in nuclear reactors, valued as an exceptional neutron source for medical and industrial applications.

Dog Collar
A dog collar is a band worn around a dog's neck, typically made of nylon or leather, used for identification, control, and attaching leashes.

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

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