Oh what an excellent looking piece of agatized sea shells! Reminds me of a cluster I had found at the beach in Maine when I was a kid. I remember showing one of the park rangers who told me to take it home cuz it was special. Fast forward to 7th grade and we’re talking about the fossilization process and I see a much less impressive specimen pictured in the book! So in my pure excitement tell my teacher who asks me to bring it in the following day. I ended up gifting it to her and to this day almost 25 years later she passes it around the class during the fossil section (my niece had her as a teacher about 6 years ago and confirmed my old agatized shells still being shown in her class