Oh, these are so beautiful! I love the brass color against this pale green that has almost a faint inner glow.
It's beautiful pieces like this that make me wish I'd had some access to learning this kind of craft, but neither in my home town, or at the art college I attended did they offer metal and stone working.
I learned from looking at a few tutorials on the internet, and then buying a bag of aquarium stones and cheap copper wire to practice on until I got the hang of it. My initial investment in this stuff was roughly $12 for supplies and tools. Don't let not having access to courses stop you! There are plenty of resources all over the internet!