Here is another cluster of a group of small, solid, natural, abalone pearls that have come free from the mantle and were subsequently cemented to the inside of the shell. This must have happened a fairly short time before the abalone was harvested because they have only about one or two layers of nacre covering them. Unfortunately, they were allowed to lay about, probably outside and uncovered, so that they weathered badly and, I believe, have very little value. However, they provide a good illustration of the process of pearls adhering to the shell and starting to be incorporated into it.