Sabatierite is a rare mineral that has a distinct greenish-blue color and is composed of the elements cobalt and iron. However, if you are struggling to pronounce or remember the word, there are a few synonyms that you could use instead. For example, you could describe the mineral as a cobalt-iron sulfide, or reference its characteristic color by calling it blue-green cobalt. Alternatively, you could simply refer to it as a rare sulfide mineral, or use more general terms such as rock or stone if you are discussing it in a non-technical context. Regardless of what term you use, this fascinating mineral is sure to captivate anyone who is interested in the wonders of the natural world.