If you are looking to acquire it for research, industrial, or collecting purposes, here is where you should look: Specialty Chemical Suppliers
Sells highly purified element samples specifically for collectors. where to buy rubidium
If you are a hobbyist looking for a small, "display-safe" sample (usually sealed in a glass ampoule under argon gas), these sites are your best bet: If you are looking to acquire it for
Rubidium is a highly reactive alkali metal, so you won’t find it at a local hardware store. Because it can ignite spontaneously in air and reacts violently with water, its sale is strictly regulated and requires specialized shipping. or collecting purposes