Pearl (animal material)
Esquema
Jerarquía
<materials by composition> > combination inorganic/organic material > combination inorganic/organic animal material
Descripción
A smooth round bead formed primarily within the shells of two distantly related groups of molluscan bivalves or clams, including the ocean-dwelling pearl oysters and the freshwater river mussels. Pearls are used in jewelry and for other ornamental puposes; they are considered a gem.
Subcategorías
URI original del concepto
Otros términos
- parel (dierlijk materiaal) [nl]
- perla [es]
- pearls (animal material) [en]