Seawater and Freshwater. Whats the difference ?
Seawater oysters have a small round shell bead inserted to stimulate nacre production (the substance that creates the pearl). This helps produce the classic round pearl shape. Beware seawater pearls that have been harvested too early. If the nacre coating is too thin it will quickly wear away. Credible suppliers ensure their pearls have good nacre layers. Freshwater mussels have a small piece of ‘mantle tissue’ (nacre producing tissue from another mussel) inserted to stimulate pearl production. Freshwater pearls are solid pearl.
