There are many myths and misconceptions regarding jewellery and gemstones. Here is one of them:
Only Oysters Produce Pearls.
The most valuable pearls occur in the wild, but are rare. Most pearls used in jewellery are commercially farmed from pearl oysters and freshwater mussels. However, nearly all shelled molluscs are capable of producing pearls, these pearls tend to be less spherical and of no great commercial value.
Cleopatra is said to have dissolved a very valuable pearl in vinegar and drank it to prove to Mark Anthony that she could throw the most elaborate and expensive banquet of all time!