Abstract: A method for extracting diamondoid compounds from a hydrocarbonaceous fluid such as natural gas, that contains diamondoid compounds is disclosed. The hydrocarbonaceous fluid is mixed with a first solvent in which diamondoids are at least partially soluble. The resulting mixture is separated into a vapor stream and a diamondoid-enriched solvent stream. The vapor stream is then countercurrently flowed past a second solvent in a multistage contacting device, so that a diamondoid-depleted vapor stream and a second diamondoid-enriched solvent stream are created. The diamondoid-enriched solvent streams can be recycled and either added to the first solvent or removed if they are highly saturated with diamondoid compounds.