Oho!!!!
FIRE AGATE !!!! You've got a winner there - wherever the location is that you found that, you need to go back to the same vicinity and look for more. And don't tell anyone where you found it if you plan to try to sell any quality pieces of it or word will get around and the location will get swarmed and picked clean and the location ruined by rock hounds with big dollar signs $ in their eyes before you can say "Jack Robinson".
I'm a rock and gemstone collector too. I know that going just by the photos you provided isn't adequate because really it needs to be physically examined to look for all the tells, but I'm still about 99% sure from just the photos and your description of texture, that it is rough fire agate. Found in the western mountains, pushed up from volcanic and tectonic activity. Rather rare and very valuable to lapidarists and jewelers who have the right tools to cut them open properly to get at the incredibly beautiful iridescent opalescent raw bubbled jewels contained inside. A good gem quality specimen of properly cut and polished fire agate the size of a pea can be worth around $150 or more these days. The larger the gem specimen the greater the value in increments into the many thousands of dollars. See examples below of specimens of rough fire agate like yours, and of finished gem quality pieces in jewelry. The beauty of the gems will blow you away and you'll see the finished pieces can be worth a very pretty penny for being just agates.
And just for your trivia information, for anyone who is into lore about healing crystals and their powerful vibrational energies and other mystical healing properties. Fire agate is one of most desirable stones for shamans and natural healers who work with stones, considered to be a shaman's or healer's
manifestation stone, capable of making things happen magically by holding the stone in the hand and thinking about the thing or event that you want to become manifest. Does it work? Yes, somehow it does work, but it shouldn't be messed around with by people who are insincere and not pure of heart with good intentions. Otherwise the manifestation can rebound on the insincere user.
Good luck will come to those who sincerely treat it with respect, wonder and caution.
rough specimens:
https://www.google.com/search?sca_e...HS2mLTwQtKgLegQIExAB&biw=1119&bih=609&dpr=1.5
gems found in the rough:
https://www.google.com/search?sca_e...HW-mA4IQtKgLegQIDxAB&biw=1119&bih=609&dpr=1.5
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