These happy Bismuth hopper crystals are sure to delight! Bismuth was available on my website in the past but the supply chain was longer and more opaque than desired, especially in regards to the location of the mine. The new supply chain is shorter and transparent, mine-to-market. My supplier owns a small foundry in Michigan, USA. He makes the hopper crystals by melting the rough bismuth and allowing them to naturally reform in these cool geometric shapes. Aren't they fun!?!