Definition of Pearl

A. Natural Pearl

  • Formed by nature
  • The intrusion of small particles, such as sand, to the oyster/mussels irritates oyster to secrete nacre to surround this foreign body.
  • The nacreous layer starts growing layer by layer and forms Natural Pearl

B. Definition of Cultured Pearl

  • Insertion of foreign body by human and grow by nature
  • Human inserts small piece of mantle tissue, with/without bead into mother oyster/mussel
  • The nacreous layer starts growing layer by layer and forms Cultured Pearl.