Could be chrysocolla but I am not sure
Chrysocolla or turquoise.
The parts of the stone I can see that are clean are a very very vibrant blue. It seems it might be a bit more blue that turquoise should be.
Google pictures and compare.
Do you have a mineralshop nearby?
Or a shop where they sell stones, incense, you know?
Try asking their opinion. Or if possible attend a mineral expo and take the stones along.