.7" Yellow Sulfur Crystals on Fluorescent Aragonite - Italy

This is a .7" wide specimen of sulfur crystals associated with aragonite, collected from the Cianciana Mine in Sicilia, Italy. The crystals have a ridiculously vibrant color and are in a solid habit instead of as a powdery coating typical in sulfur deposits. This specimen has been mounted to a clear acrylic display stand with mineral tack for a clean, aesthetic presentation.

Under shortwave ultraviolet light, the aragonite exhibits a vibrant orange fluorescence.

About Sulfur Crystals

Sulfur is a striking and instantly recognizable mineral, prized by collectors for its vivid yellow coloration and its distinctive crystal habits. Chemically, sulfur occurs as S₈—ring-shaped molecules composed of eight sulfur atoms—which give rise to its characteristic resinous luster and translucent glow. In nature, well-formed sulfur crystals typically develop as sharp dipyramids or blocky, tabular shapes. These specimens most often originate in volcanic or sedimentary environments, where sulfur precipitates from sulfur-rich gases or hydrothermal fluids. Many classic localities, such as Sicily or the salt domes of Texas and Louisiana, produce crystals perched on matrixes of gypsum, aragonite, or limestone, creating visually dramatic contrasts.

In the context of mineral specimens, sulfur requires a bit of care. The crystals are relatively soft and brittle, and can fracture if subjected to sudden temperature changes. Because of this thermal sensitivity, sulfur is best stored in a stable environment away from heat sources, bright sunlight, or rapid fluctuations in temperature. With proper handling, however, these luminous yellow crystals remain some of the most eye-catching and iconic mineral specimens in the collecting world.

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DETAILS
SPECIES
Sulfur & Aragonite
LOCATION
Cianciana Mine, Sicily, Italy
SIZE
.7" wide
CATEGORY
ITEM
#239173