The full width half maxima (FWHM) of the ν1 peak in the aragonite spectrum by Raman spectroscopy of aragonite precipitated in vitro in the presence and absence of biomolecules.

FWHM of aragonite samples precipitated from seawater, using a pH stat titrator using the constant composition technique between September 2021 and December 2022. Data were collected to determine how changes in the calcification fluids of calcareous organisms affect aragonite structure. Data were collected by Giacomo Gardella, Sam Presslee and Nicola Allison and interpreted by Giacomo Gardella, Cristina Castillo Alvarez, Nicola Allison, Adrian Finch, Kirsty Penkman, Roland Kröger, Sam Presslee and Matthieu Clog.