Chapter
How pearls are formed
05:36 - 12:07 (06:31)
Pearls are formed when a mollusk gets irritated and builds up nacre around a grain of sand or parasite. Every pearl starts this way and can become a perfectly spherical pearl for jewelry.
Clips
Pearls are formed when a mollusk is irritated and builds up a substance called nacre to isolate the irritant, resulting in the formation of either a true or non-true pearl.
05:36 - 11:08 (05:31)
Jewelry
Summary
Pearls are formed when a mollusk is irritated and builds up a substance called nacre to isolate the irritant, resulting in the formation of either a true or non-true pearl. The substance creates a different structural arrangement when forming true pearls, which are highly valued and used for jewelry.
ChapterHow pearls are formed
EpisodePearls: Second Best Thing About Oysters
PodcastStuff You Should Know
Non-nacreous pearls, such as those made from a calcareous concretion, are different from true pearls and are generally less valuable.
11:08 - 12:07 (00:59)
Non-Nacreous Pearls
Summary
Non-nacreous pearls, such as those made from a calcareous concretion, are different from true pearls and are generally less valuable. These pearls are often pink or brown and come from the queen conch in the Caribbean.