How are pearls made?

Answer 1

Natural Pearls

Natural pearls typically form when a parasite burrows through a mollusk's shell and into the mantle tissue. The mollusk's defensive reaction surrounds the intruder with a membrane known as a pearl sac. The interior of this sac is lined with nacre-producing cells known as epithelial cells. These cells begin to deposit microscopic platelets of nacre (aragonite and calcite) around the intruder. This continues and a pearl grows. Damage to the mollusk's shell has also been known to cause natural pearl formation. A grain of sand does NOT produce a pearl Cultured Pearls

Cultured pearls are produced by the introduction of a nucleus and a piece of donor-mollusk mantle tissue in the gonad of a marine mollusk (pearl oyster), or by grafting a piece of donor mantle tissue into a freshwater mussel's mantle (without a bead).

Answer 2

Natural pearls come in many shapes, however perfectly round ones are very rare. They are made up of calcium carbonate and conchiolin and are formed when a microscopic intruder or parasite enters a mollusk and settles inside the shell. The mollusk is irritated by the intruder and secrets the conchiolin/calcium carbonate repeatedly until a pearl is formed. Cultured pearls are formed when a tiny of mantle tissue from a donar shell is transplanted into a recipient shell, which causes a pearl sac to form. Such pearls can be produced using freshwater or seawater shells. They also go by the following names: Akoya, white or golden South sea, and black Tahitian.

Answer 3

by putting a bunch of shiny stuff together.