Thanks for the reply, that's got to be what they are. Most info doesn't seem to mention them liking grape leaves, but these guys seem to like them. I am a bit confused because they are supposed to hibernate through the winter as first instars, so I will probably just put the 2 I have back where I found them.

Thank you kevin for the type. I've seen Statuary at our stoneyard over the last several months, but I hadn't seen this particular piece of marble for about 15 years (it's been in a hall closet for that long, hiding!). Christmas was the first time I had laid eyes on it since then. Thanks y'all, now I have to figure out what to do with it!

It's a lovely iris of some sort.

you might want to try the cactus and succulent forum ...