I have gotten many of them very cheap, others not so cheap, but the last ones I was fortunate to receive from nature itself, free of charge.
In the last place I visited, I found Jasper right at the river bank and in Topes de Collantes, I found beautiful white quartz stones.
That’s incredible. I’ve never seen valuable crystals in nature before. I guess I’m not living in the parts of the world where they come from