Melanin: worth nine times more than it's weight in gold
https://twitter.com/dom_lucre/status/1669080028666003460?s=20
"Organ harvesting is a very lucrative business, it is intensified when you consider melanated organs, which cost more than organs without it. Melanin currently costs more than gold, silver, platinum, palladium rhodium and coltan combined so Haiti had value."
It could be all that. I don't know. Check it though:
The Extraction of Melanin from Skin with Dilute Alkali W.J. Young 1920
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1258964/