As an alloying agent in steel to aid iron's otherwise modest attributes in hardness, and as a glass colorant, cobalt is little more than an industrial afterthought with the pure metal having few if any uses all on its own. Cobalt can be manufactured to a high degree of purity by an electrolytic process where it accumulates on the cathode ends from various solutions. From these cathodes the metal falls off in chunks and can then be machined into attractive shapes of various forms. Here's a little of this element from this process to grace your collection!
Photo shows a full container with about ten grams of cobalt metal.