Fresh water pearl star earring , width0.62cm,  length0.64cm, sink0.52cm. This fresh water pearl grown in lakes, river, pool and are from shellfish – especially oysters and mussels. The farmer puts a piece of grit inside the shell, and as a natural defence against this irritant, layers of material, known as nacre, are secreted by the shellfish around the grit, which gradually builds up to form the solid pearl. If you are go to www.energytoseek.com the fresh water pearl introduction. Yor can know lot of it.