Rarity is relative. My experience and a quick perusal of mindat.org would suggest that jarosite is not very rare. (There are many hundreds of localities, and fine micro crystals can be easily purchased for a few bucks.) However, jarosite is indeed rare in large crystals or fine specimens of display quality.
Jarosite is typically not used in jewelry due to its relatively low hardness and susceptibility to scratching and damage. It is more commonly used in industrial applications such as pigments, inks, and as a source of iron and sulfate in the mineral processing industry.
Jarosite is the sulfate mineral found on the surface of Mars that indicates the past presence of liquid water.
there are 2 different types of 'rare'. There is Super Rare and rare. Doris = Rare :)
a rare opportunity
its SUPER RARE!!!!!!
He is definetly rare. As rare as he can be.
She is ultra rare
It is a rare species
its a rare a super rare and a parallel rare
Ultra rare ~ Extremely rare! If you have this Moshi Monster... WOW! Rare ~ Good, but it could be better! Normal ~ Nevermind!
Not that rare
rare