Got home from Israel this morning. I swear, I've never been anywhere in my life that as far as you could see was Primo Flint and chert. I tried to High Grade some to sneak home in my luggage in case what was being shipped with the samples never made it. I was going crazy, I'd pick up a nice piece walk 10' and there's a better piece. This went on for an hour and I told the Geologist, enough. I'd go crazy and be there all afternoon trying to find the best 4 pieces to take with me. I'll post pictures tomorrow with what I brought with me and what the TSA found in my luggage, yep, they opened both bags, left me a note and had the rocks sitting on top of my clothes.
I was glad they didn't know the Customs laws or I would have been busted. You need US Agriculture stamps to bring rocks or soil into the US from a foreign country. Those will be on the box of "sample" rocks coming in this week.
This stuff chips like perfect, heat treated Texas rock. Pictures tomorrow.