As some who uses unique materials to create unusual pieces, I have to say that I love the unique materials you've used in your designs! You could maybe create a little story around the materials you've used or appeal to our inner geek & talk a little about lava or some of your other materials. Cool shop :)
The rest of your description is practical, but not engaging. I think I've gotten away from the story telling thing myself, so this is also a great reminder for me to revisit those descriptions.
It's good that you've broken up the listing into blocks, so a customer can browse & read as much or as little as they want, without having to go through a big block of text.
I hope this helps!
