They look like the man made gems that you buy and use for decorations in flower pots and put in the fish tanks and bottles. They come in bags that look like nets. They are sea green color and are put in vases too. They are sold on Amazon.

Or if nature made them, they can be agates.

Looks like jade that's been polished.

While digging in the ground around an area that used to be under a small natural pond or lake I found ten of these cool rocks the bottoms very smooth milk green usually with darker likes all over and the tops are darker with tiny dimples in the surface. They aren't very hard some are scratched from my shovel.

I'm just really curious if they are natural or man made, one might say I'm quite the geodude.:)