Pearls are known as the queen of gems and grow in marine or freshwater environments. It developed under the influence of marine oysters and freshwater mussels. When any insect or sand entered an oyster or a mussel, it caused an irritant, allowing the oyster to protect itself. Pearl farming is a form of aquaculture that can be very profitable for those interested in starting it. It r... https://tractorkarvan.com/blog/how-to-start-profitable-pearl-farming