Abalone shells(extremely old, pink tone)

Very cool abalone shells from Monterey, CA. My buddy and I worked for the California Conservation Corps at the time, we were building a new trail along the cliffs by the old whaling station and we unearthed these ancient abalone shells. The archaeologist said they were thousands or even possibly hundreds of thousands of years old. Hence the pink tone and bigger nature. Different iridescence tones as well. Found tons of arrowheads and spearheads too but those are archaeological finds..even though I personally think they should remain with the earth. Gorgeous.. make me an offer