We made these coasters almost 6 years ago, and I just found out that we still have some! You can pick them up here: https://www.curiositybox.com/products/glowing-beverage-elemats-coasters
ALSO: I talk about Vanadium, Sulfur, Gold, and Cerium in this video: https://www.youtube.com/watch?v=3_7KYoO5qHk
