'''Rumanite''' is a rare variety of fossilized tree resin (amber), known for its deep reddish to brownish hues. It is found exclusively in Romania, particularly in the sandstone deposits of the Buzău River system near the village of Colți in Buzău County.<ref>{{Cite journal |last=Stout |first=E. C. |last2=Beck |first2=C. W. |last3=Anderson |first3=K. B. |date=2000-11-01 |title=Identification of rumanite (Romanian amber) as thermally altered succinite (Baltic amber) |url=https://doi.org/10.1007/s002690000111 |journal=Physics and Chemistry of Minerals |language=en |volume=27 |issue=9 |pages=665–678 |doi=10.1007/s002690000111 |issn=1432-2021|url-access=subscription }}</ref><ref>{{Cite web |last= |first= |title=Rock Used as Doorstop for Years Found to Be Worth More Than $1 Million |url=https://www.geologyin.com/2025/04/rock-used-as-doorstop-worth-1-million.html |access-date=2025-07-09 |website=Geology In |language=en}}</ref>
Rumanite was first classified by geologist Oscar Helm, to differentiate it from other types of amber.<ref>{{Cite web |last=Costa |first=Raúl Sánchez |date=2024-09-03 |title=Elderly Romanian woman used amber nugget worth over $1 million as a doorstop for decades |url=https://english.elpais.com/international/2024-09-03/elderly-romanian-woman-used-amber-nugget-worth-over-1-million-as-a-doorstop-for-decades.html |access-date=2025-07-09 |website=EL PAÍS English |language=en-us}}</ref><ref>{{Cite web |last=Team |first=Geology In |title=Rock Used as Doorstop for Years Found to Be Worth More Than $1 Million |url=https://www.geologyin.com/2025/04/rock-used-as-doorstop-worth-1-million.html |access-date=2025-07-09 |website=Geology In |language=en}}</ref>
== References == {{Reflist}}
Category:Gemstones
{{mineral-stub}} Category:Amber Category:Fossil resins