Pearls keep their lustre amid sustainability challenges
Produced by oysters in oceans or mussels in rivers, pearls have been coveted by humans since the Bronze Age. So much so that it is believed the exploitation of freshwater pearls was a factor in the ...
Freshwater pearl mussel
About 200 years ago pearl mussels were harvested for, as the name suggests, pearls. However, the name can mislead - only about one per cent of them contain this hidden 'treasure' (and most of these ...