Geiger Counter
A Geiger counter is a handheld radiation detector used by hobbyists to identify radioactive minerals and fossils in rockhounding.
Estimated value as of 2026 · Source: Average of common entry-level models like GQ GMC-800 ($94) and GMC-500+ ($148) f…
Fun Fact
Entry-level Geiger counters suitable for detecting uranium-bearing minerals like autunite have dropped from military surplus prices around $80 in the 1950s (adjusted) to under $100 today due to modern electronics .
Price History
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