Pearl. The Healing Treasure of the Blue Depths

In ancient times, it was considered heavenly dew, or the tears of otherworldly beings, sea nymphs; in the Middle Ages, it was compared to raindrops and the tears of wronged orphans, whom angels turned into precious gems and locked in shells. It was called silver and lunar. It was revered as an attribute of kings and gods. It was used to heal, finally, many and many ailments, both bodily and spiritual.
This is all about pearls, the history and wondrous properties of which this book reveals to the reader.