On our vacation in Tenerife we have found some very nice lavastones from the Teide Volcano and want to take them on our flight home (all within EU).
The problem is that our friends went to Egypt once, found some nice stones there and tried to take them home. But it turned out that this was illegal. Airport Security didn't just tell them that they couldn't take the stones home, they were also charged a fee of 2000$.
Is there a law prohibiting us from exporting lava rocks from Tenerife?