I took another look at them, are they slices of stone?
If so, a good guess is dyed slices of geodes. At first I thought they might be the globs of glass from a glass factory.
If they are mineral stones, they will more than likely be copper ore and possibly azurite.
If they are stone, take a good look the next time you water them, as wet is what they will look like if cut and polished, they could be jewelry stones.....notice if they have fractures, from being blasted or if they can be sliced.
OK, on the bugs, I have ordered them, never did get past reading on the bees.
You now need a super tall growing bean to grow up the corn stalk and we want to see a photo of you on the ladder picking your beans.
The asparagus /yard long bean grows tall, it is good for stir-frys.
Another Zucchini Super-Plant. I love Zucchini!
(Didn't I already say that?)
And beans. I love beans. Everyone should love beans.
South Park needs a series about Beans. Any Beans, are good beans.
/Salute, Granny