Sulfur is a native element that often forms around volcanic vents & fumaroles. Sulfur often occurs in petroleum deposits. Sulfur lets off a pungeant odor that makes it very easy to identify. When burned the mineral also burns a flame that is a bright blue. You should never keep this mineral in a humid environment or put it in water because it will create hydrogen sulfide which can cause the mineral to fall apart. It is also a very poor heat conductor that makes Sulfur very brittle when put under heat. (Disclaimer: do not keep in a hot moist environment, the specimen will deteriorate.)
This piece in particular is so earthy & so grounding that it just instantly relaxes you to be around it. It's odor is not very pungent & it has a very pretty green color that reminds me of the colors of leaves on a tree.
The metaphysical properties of Sulfur include mainly vitality & energy in the crystal healing world. It is an amazing way to purify both people, environments, & even energy fields.