Maybe fossilized clam super hard

[Soonerthanlater]

Ive had this what looks to be a fossilized clam in my yard 30+years , my grandfather brought it home one day, he said he found it while they were dredging in some part of Tampa bay, it's really hard my wet saw cut through granite like butter but this not so much, basically I was wondering if anyone knew what it was and if it might have turned into something cool because I want to cut it in half and put of display, I'd appreciate any shared knowledge thanks.

[ynot]

Looks like fossil coral. Should be agate, a hard quartz mineral. Can look nice cut and polished.

[Soonerthanlater]

What is considered big for a peice of agate?, like one big peice cut in half, would it devalue if something like seen in the pictures was cut in half?

Edited April 21, 2023 by Soonerthanlater

[Kane]

Topics merged. Follow-up questions on the same specimen should be kept to a single topic. Please keep in mind that we do not provide valuations on the forum, and that was agreed to upon registration.

[JohnJ]

The dappled lighting is not best to capture details.  Try placing the piece in full sunlight.