43
Mixed
United States
Californium is the most expensive, lab-created metal, costing $10 million per gram, with only 5 grams available worldwide. It is named after its creation location and used in medical and experimental isotopes.
Californium is indeed one of the most expensive and rare synthetic elements, primarily used in nuclear applications. However, some claims, such as its price and total quantity, require specific scrutiny. The evidence suggests Californium-252 can cost up to $27 million per gram, not $10 million, affecting its factual accuracy. Additionally, while only a few grams are produced annually, confirming a precise total worldwide requires further authoritative sources.
Individual Claims
52
Mixed
Science
The most expensive metal in the world cannot be found in nature.
Californium is a synthetic metal and the most expensive one, according to multiple sources. It is not found naturally and is produced in labs. No conflicting evidence was found.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
60
Web Consensus Weight
50
Source Quality Score
40
Source Quality Weight
25
Llm Reasoning Score
50
Llm Reasoning Weight
25
Weighted Total
52
Evidence Summary
Multiple sources confirm californium is the most expensive metal and synthetic.
50
Mixed
Science
Californium is a metal of laboratory origin.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
None
Web Consensus Weight
0
Source Quality Score
None
Source Quality Weight
0
Llm Reasoning Score
50
Llm Reasoning Weight
100
Weighted Total
50
Evidence Summary
None
50
Mixed
Science
Californium is named after the place of its creation.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
None
Web Consensus Weight
0
Source Quality Score
None
Source Quality Weight
0
Llm Reasoning Score
50
Llm Reasoning Weight
100
Weighted Total
50
Evidence Summary
None
37
Mostly False
Science
Isotopes of Californium are used in tumor treatment and experiments.
Californium-252 is primarily used in nuclear reactors and scientific research; medical uses are less common and not well-documented in available evidence.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
40
Web Consensus Weight
50
Source Quality Score
30
Source Quality Weight
25
Llm Reasoning Score
30
Llm Reasoning Weight
25
Weighted Total
37
Evidence Summary
Californium-252 is used mainly in nuclear and scientific applications; medical use is minor.
37
Mostly False
Science
The price of 1 gram of Californium reaches $10 million.
Evidence indicates the price of Californium-252 can reach up to $27 million per gram, not $10 million as claimed. This makes the original claim inaccurate.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
45
Web Consensus Weight
50
Source Quality Score
30
Source Quality Weight
25
Llm Reasoning Score
20
Llm Reasoning Weight
25
Weighted Total
37
Evidence Summary
Price reached $27 million per gram according to sources; claim of $10 million is inaccurate.
34
Mostly False
Science
There are about 5 grams of Californium in the world.
While Californium is extremely rare and only a few grams are produced annually, precise global quantity isn't concretely established in evidence.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
35
Web Consensus Weight
50
Source Quality Score
25
Source Quality Weight
25
Llm Reasoning Score
30
Llm Reasoning Weight
25
Weighted Total
34
Evidence Summary
Few grams produced annually according to sources, but worldwide total is unclear.
