Reviews
This Specimen has been sold.
HERE ARE SOME OTHER SIMILAR FOSSILS FOR SALE
1.0" Extremely Fluorescent Hyalite Opal on Schorl - Nambia
This is a gorgeous 1.0" wide hyalite opal on specimen on what is most likely schorl, collected from Erongo Region of Namibia. Under both longwave and shortwave UV light, the hyalite opal exhibits a vibrant green fluorescence. The reaction to shortwave UV is a result of trace uranyl ions.
It has been mounted to an acrylic display base with mineral tack.
It has been mounted to an acrylic display base with mineral tack.
About Hyalite Opal
Hyalite is a transparent to translucent variety of opal that commonly forms smooth, glassy globules or botryoidal coatings. An amorphous form of silica (SiO₂), hyalite is classified as a mineraloid and typically forms as a volcanic sublimate in volcanic or pegmatitic environments, where silica-rich vapors condense and solidify. It is also known as water opal, jalite, or Müller’s glass, named after its describer, Franz-Joseph Müller von Reichenstein.
One of hyalite’s most distinctive features is its intense fluorescence: under shortwave ultraviolet light, many specimens glow a vivid neon green. This striking effect is caused by trace amounts of uranium, present as uranyl ions, incorporated into the opal’s structure during formation. In normal lighting, hyalite often appears colorless and glass-like, making its dramatic UV response especially surprising and highly prized by mineral collectors.
Hyalite is a transparent to translucent variety of opal that commonly forms smooth, glassy globules or botryoidal coatings. An amorphous form of silica (SiO₂), hyalite is classified as a mineraloid and typically forms as a volcanic sublimate in volcanic or pegmatitic environments, where silica-rich vapors condense and solidify. It is also known as water opal, jalite, or Müller’s glass, named after its describer, Franz-Joseph Müller von Reichenstein.
One of hyalite’s most distinctive features is its intense fluorescence: under shortwave ultraviolet light, many specimens glow a vivid neon green. This striking effect is caused by trace amounts of uranium, present as uranyl ions, incorporated into the opal’s structure during formation. In normal lighting, hyalite often appears colorless and glass-like, making its dramatic UV response especially surprising and highly prized by mineral collectors.
SPECIES
Opal var. Hyalite & Tourmaline var. Schorl
LOCATION
Erongo Region, Namibia
SIZE
1.0" wide
CATEGORY
SUB CATEGORY
ITEM
#287108
