Malachite!!!!

I love this mineral. You can't get a cooler color-green. The large block of malachite was from Earth Resources in Appleton, WI. It was my first mineral specimen I ever bought. The cost was $25 and I used my birthday money from Grandpa.
The other mineral samples are from a gem and mineral show at a local fair grounds a few years ago in the mid 2000's.
The carved turtle is one of the kids picks from the show.
Here are the facts from about.com's geology guy.
Malachite forms in the upper, oxidized parts of copper deposits and commonly has a botryoidal habit. The intense green color is typical of copper (although chromium, nickel and iron also account for green mineral colors). It bubbles with cold acid, showing malachite to be a carbonate.
You'll usually see malachite in rock shops and in ornamental objects, where its strong color and concentric banded structure produce a very picturesque effect. This specimen shows a more massive habit than the typical botryoidal habit that mineral collectors and carvers fancy. Malachite never forms crystals of any size.

The blue mineral azurite, Cu3(CO3)2(OH)2, commonly accompanies malachite.