Reviews
3.75" Sparkling Youngite Specimen - Wyoming
This is a 3.75" wide rough section of youngite collected near Guernsey in Platte County, Wyoming. Youngite is a brecciated jasper that is often found encrusted in chalcedony, as can bes seen in this specimen. Typically this material is seen on the market cut and polished. Under shortwave UV, this agate fluoresces a faint green.
It comes with an acrylic display stand.
It comes with an acrylic display stand.
About Youngite
Youngite is a special brecciated agate uniquely sourced from a single deposit in Wyoming, where angular agate fragments were naturally shattered and later armored in a glittering crust of druzy quartz. For decades, this site has been essentially unreachable—locked away by geography, ownership changes, and lack of viable access roads. Most specimens on the market today trace back to limited collecting activity from several decades ago.
Its famed explosion of color—ranging across reddish-brown, peach, sky blue, white, cream, and flashes of yellow-gold—comes from the very process that created it. Brecciation fractured the original agate, and later silica-rich groundwater infiltrated the gaps, cementing the fragments together while depositing microcrystalline quartz on the exterior. Those mineralizing fluids carried trace elements and inclusions that tinted each pocket of stone differently, producing youngite’s signature, “beautiful chaos” aesthetic.
Beyond color, youngite is prized for intense shortwave UV fluorescence, igniting a vivid acid-green glow that feels almost otherworldly. While striking in its natural, irregular, quartz-coated form, the mineral reveals its full personality when cut into slabs, where the brecciated interiors expose labyrinthine patterns that seem to radiate even more dramatically under UV—an effect that has earned it comparisons to alien landscapes and sci-fi visuals.
Youngite is a special brecciated agate uniquely sourced from a single deposit in Wyoming, where angular agate fragments were naturally shattered and later armored in a glittering crust of druzy quartz. For decades, this site has been essentially unreachable—locked away by geography, ownership changes, and lack of viable access roads. Most specimens on the market today trace back to limited collecting activity from several decades ago.
Its famed explosion of color—ranging across reddish-brown, peach, sky blue, white, cream, and flashes of yellow-gold—comes from the very process that created it. Brecciation fractured the original agate, and later silica-rich groundwater infiltrated the gaps, cementing the fragments together while depositing microcrystalline quartz on the exterior. Those mineralizing fluids carried trace elements and inclusions that tinted each pocket of stone differently, producing youngite’s signature, “beautiful chaos” aesthetic.
Beyond color, youngite is prized for intense shortwave UV fluorescence, igniting a vivid acid-green glow that feels almost otherworldly. While striking in its natural, irregular, quartz-coated form, the mineral reveals its full personality when cut into slabs, where the brecciated interiors expose labyrinthine patterns that seem to radiate even more dramatically under UV—an effect that has earned it comparisons to alien landscapes and sci-fi visuals.
$25
