Claim: https://www.zmescience.com/science/geology/kyawthuite-myanmar-rarest-mineral-rep/

First requested: September 14, 2026 at 2:25 AM
89%

IsItCap Score

Truth Potential Meter

Very Credible

AI consensusMedium

Grader consensus is moderate.
Range 84%–95% (spread Δ11).
The graders lean in the same direction but differ on strength. Skim the summary and sources.
Read analysis summary

OpenAI Grade

0%
20%
40%
60%
80%
85%

Perplexity Grade

0%
20%
40%
60%
80%
84%

Google Gemini Grade

0%
20%
40%
60%
80%
95%
Shareable summary
Verdict: Questionable
  • The evidence does not prove no second specimen exists.
  • Several supporting sources are secondary or low-transparency.
/r/kyawthuite-rarest-mineral

Analysis Summary

Kyawthuite is mostly true as the rarest mineral on Earth, supported by scientific sources and the International Mineralogical Association. The claim is backed by multiple articles confirming its status based on a single known specimen. However, some alternative sources question the uniqueness of its formation conditions, suggesting that rarity can be context-dependent. Despite this, the consensus remains that kyawthuite holds the title of Earth's rarest mineral due to the absence of additional specimens. All three graders point in the same direction, with minor differences. Gemini comes in highest (95%), while Perplexity is lowest (84%). While the claim that kyawthuite is the rarest mineral is widely supported, some sources argue that the classification of rarity can vary based on geological context and formation conditions. These opposing views do not significantly undermine the main claim, as the consensus from reputable sources still affirms kyawthuite's status based on the lack of additional specimens. Therefore, while there is some debate regarding the criteria for rarity, it does not alter the overall conclusion that kyawthuite is recognized as the rarest mineral.
Jump to source analysis

Source quality

Truth (from sources)8.50 / 10
Source reliability8.00 / 10
Source independence7.00 / 10

Claim checks

Fits established facts8.00 / 10
Logical consistency9.00 / 10
Expert consensus8.00 / 10
Related fact checks

Source Analysis

Common arguments
Supporting the claim
  • Only one known natural specimen is described in the evidence.
  • The IMA-listed status supports it as a valid mineral species.
  • Multiple sources repeat the same rarity claim.
Against the claim
  • The evidence does not prove no second specimen exists.
  • Several supporting sources are secondary or low-transparency.
  • The claim uses a superlative that depends on current cataloging.

Mainstream Sources

Publication

zmescience.com

Title

Meet the world's rarest mineral. It was found only once

Summary

<strong>A single gemstone from Myanmar holds the title of Earth&#x27;s rarest mineral</strong>. ... The only specimen of kyawthuite.

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Publication

ecoticias.com

Title

The rarest mineral recognized by science weighs about 0.011 ounces, exists as a single known natural specimen, and its discovery exposes how fragile Earth’s catalog still is

Summary

Kyawthuite was <strong>approved as a valid mineral species by the International Mineralogical Association in 2015.</strong> The official International Mineralogical Association (IMA) mineral list identifies kyawthuite as an approved mineral from Myanmar under ...

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Publication

okdiario.com

Title

Earth’s rarest mineral weighs just 1.61 carats, and the single crystal from Myanmar shows how fragile science’s catalog still is

Summary

Heat, fluids, pressure, timing, and rock chemistry all have to line up just right. <strong>Kyawthuite remains the rarest mineral on Earth, with its official scientific record based on a single 1.61-carat specimen from Myanmar</strong>.

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Alternative Sources

Publication

reddit.com

Title

r/todayilearned on Reddit: TIL that the rarest mineral on Earth is kyawthuite, with only one known specimen found in Myanmar.

Summary

Googled it and the results showed (Not AI) &quot;<strong>What sets kyawthuite apart is not the scarcity of its constituent elements—bismuth and antimony—but the extraordinary circumstances of its formation</strong>.&quot;

Source details

Type: Forum
Low Transparency

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Publication

reddit.com

Title

r/geology on Reddit: The rarest mineral recognized by science weighs about 0.011 ounces, exists as a single known natural specimen, and its discovery exposes how fragile Earth’s c…

Summary

From the article: “A tiny reddish-orange gem from Myanmar has become one of the strangest trophies in modern geology. The mineral is called · kyawthuite, and <strong>science has documented only one natural crystal so far</strong>.

Source details

Type: Forum
Low Transparency

URL

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Publication

thebrighterside.news

Title

Kyawthuite is Earth's rarest mineral — only one specimen has ever been found - The Brighter Side of News

Summary

Yet that tiny stone, recovered from northern Myanmar, stands alone. <strong>No second specimen of kyawthuite has ever been confirmed</strong>, and that makes it a geological outlier with a story far larger than its size.

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Analysis Breakdown

True/False Spectrum (8.5)Source Credibility (8.0)Bias Assessment (7.0)Contextual Integrity (8.0)Content Coherence (9.0)Expert Consensus (8.0)81%

How to read the breakdown

Weakest areas
Independence7.0/10Source reliability8.0/10
  • Truth: how well sources support the core claim.
  • Source reliability: whether the sources have a strong track record.
  • Independence: whether coverage looks one-sided or recycled.
  • Context: missing details (timeframe, definitions, scope) that change meaning.
  • Tip: if graders disagree, rely more on the summary + sources than the single number.

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Methodology