Stellerite is a rare mineral that belongs to the zeolite family, which is commonly found in volcanic rocks. The word stellerite is derived from the name of Georg Wilhelm Steller, a German naturalist who discovered the mineral in 1740. Although stellerite is a unique mineral, it has several synonyms that are used to describe it in different contexts. Some of these synonyms include Stilbite, Heulandite, and laumontite. Stilbite and Heulandite are two of the most commonly used synonyms for stellerite, as they share similar physical properties and are often found in conjunction with stellerite deposits. Laumontite is another synonym for stellerite, but it is less commonly used and has a slightly different crystal structure.