Online estimates suggest saffron can retail for anything between $10 and $20 (£8-£15.90) per gram. This silvery-white metal is one of the rarest metals in the world. It's a key component in catalytic ...
Despite their name, these metals are not rare in nature, but can be hard to extract and separate from the ore that surrounds them such that demand is outpacing supply. As the world moves away from ...
A Critical Review of the Alloy Systems of the Rare Earth, Scandium and Yttrium Metals. By Dr. Karl A. Gschneidner Jr. (Prepared under the auspices of the Office of Technical Information ...