This article led me to another one, from 2015, that's even better, so I'll follow this one with another thread on that one, too.
GIA Finds Pearl That Looks Like a Fish
November 10, 2017 by Rob Bates
"Gemological Institute of America’s New York City lab recently examined a natural freshwater pearl that, in its words, “showed a remarkable likeness to a small fish swimming.”
The fish-shape 2.12 ct. brownish-orange pearl measures 21.34 mm by 6.28 mm by 2.81 mm, according to a Gems & Gemology lab note authored by Sally Chan Shih and Emiko Yazawa.
The authors point out that a natural pearl “takes on ... "
https://www.jckonline.com/editorial-art ... -334329457
