5. Minerals
Smuggling of minerals like chromite, coal, gold and iron and precious stones like lapis lazuli and emeralds in Afghanistan constitutes 20-25% of its foreign trade.
People get good money by selling black stones covered in coltan ore in Venezuela to brokers.
This coltan ore is used in micro chips in smartphones, used as a powder in solar panels it increases efficiency.
But mining coltan ore in Venezuela, yes you guessed it, is illegal.
Even women and children take part in this mining process.
The drug smugglers mix this with other legitimate minerals and sell it to high tech manufacturers.
These people who mine the conflict minerals are poor and have no safety or job security; they simply do it for the good money they get.
6. Currencies
People are not legally allowed to carry currencies illegally, hence they get detained at airports.
In June 2013, a woman and her sixteen year old daughter were caught on the Windsor- Detroit tunnel in America.
They had $59,000 sewn in pouches inside the linings of their bras.