Typically, amber forms over millions of years as tree resin fossilizes, but paleontologists have sped that up, creating amber-like fossils from pine resin in 24 hours. The technique could help ...

The result is a reasonable liquid flux, something which perhaps ... heavy fractions left after extracting the volatiles from pine resin.

More information: Evan T. Saitta et al, Experimental maturation of pine resin in sediment to investigate the formation of synthetic copal and amber, Scientific Reports (2025). DOI: 10.1038/s41598 ...