‘newly cut californian abalone mabé pearls display a variety of shapes’ in pearls: a natural history - american museum of natural history + the field museum (2001)
Ever since I read a book on fieldwork in Ethiopia’s volcanic regions that described insects turning into stone before the geologist’s eyes demonstrating a sort of instant fossilisation in a silica rich volcanic hot spring, I have been searching for a decent photo of the phenomenon to share this cool story with you.
