The https://en.wikipedia.org/wiki/Gibeon_(meteorite) is 26 tons, plus 100+ fragments in a strewn field of 10,000+ sq. miles.
It proves nothing - but from just 100kg, you could put 1/2 carat bits of meteorite in 1,000,000 rings.
It proves nothing - but from just 100kg, you could put 1/2 carat bits of meteorite in 1,000,000 rings.
The "good enough" scenario I guessed at has a semi-honest treasure hunter finding a 100kg-ish fragment somewhere in those 10,000 sq. mi., then selling it to someone making rings. Lab work (isotope ratios, grain structure, etc.) could confirm that it was very likely part of the Gibeon meteorite - whether or not the ownership paperwork was legit.
Something I saw while googling is that the composition & crystal structure of this meteorite makes it very attractive for use in jewellery.