Here is a nice, solid tourmaline crystal with a complex termination and plenty of weight to swing around. Unfortunately, it came without a locality, but it would still look great in your case or in an oversized pendant.
It measures 46 x 17 x 15mm and weighs 21.6 g
https://youtube.com/shorts/3VmRwLHRkqA?si=1CBsQvP_dxbjmdCy