Youngite
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Youngite is a variety of agate that is provided a local name for agatized limestone breccia clasts
rehealed with bluish-gray chalcedony and drusy quartz. This chalcedony and quartz usually also form
around the exterior and lines the vugs of the material. It comes from one location only and is no
longer mined, making this rare. Youngite is only found near Guernsey, in Eastern Wyoming. The
most notable locale that produced some excellent specimens is the Hartville Uplift. Although
specimens are still available from time to time, the Wyoming locations are now closed.

Youngite is a fluorescent rock and can be found in ultra violet or black light displays at many
museums. The chalcedony/drusy quartz glows green under Ultra Violet (UV) or black light. The jasper
center of this material is called brecciated due to its angular fragmentation. The jasper center varies
in color from a light tan, to a pretty peach, brown, reddish, salmon and variations of these colors. The
material is very hard and is used in making cabochons and other jewelry pieces. It polishes well and
makes excellent display specimens for the collector.
Deep Salmon and Reddish Brown Jasper dominate this super solid old stock
specimen. This piece is from our personal collection that we have had for many
years. This piece was cut on 2 sides, polished on one side many years ago by a
nice lady who ran an old rock shop close to Casper, Wyoming

This specimen weighs 10.4 oz or 0.65 lbs (296g)
and measures 2.6 x 2.6 x 2.3 inches (6.7 x 6.6 x 5.9cm)
Item# YWY12129921
Old Stock Polished
Face Youngite

$48.00
Nice brecciated faces with different patterns from each angle. Softer pink colors to
light salmon. This makes an excellent free standing display or will make some
beautiful cabochons. From the Hartville lift in Wyoming.

This specimen weighs 16.2 oz or 1.01 lbs (459g)
and measures 4 x 3.1 x 2.7 inches (10.2 x 8 x 6.9cm)
Item# YWY12129941
Rough Hartville
Specimen of Youngite

$32.00
Nice brecciated faces with different patterns from each angle. Darker pink colors to
dark salmon. This makes an excellent free standing display or will make some
beautiful cabochons. From the Hartville lift in Wyoming.

This specimen weighs 9.1 oz or 0.57 lbs (259g)
and measures 3.9 x 2.6 x 2 inches (9.9 x 6.7 x 5.3cm)
Item# YWY12129931
Rough Hartville
Specimen of  Youngite

$27.00
Deep Salmon, Reddish Brown and shades to light pink Jasper accentuate this 1/2" thick old stock specimen display
slab. This piece has been coated with a sealer on both sides but does not coat the botryoidal vugs. This piece was
cut on 3 sides. We were going to lap this piece to remove the sealer and put a nice polish on it, but, with so many
rocks and so little time, we decided to sell this RARE XL Youngite slab "as is". This is old stock from Platte County,
Wyoming. It is extremely rare to find a specimen this large since mining was stopped years ago.

This specimen weighs 23.9 oz or 1.49 lbs (679g) and measures 6.9 x 6.5 x 0.56 inches (17.7 x 16.6 x 1.43cm)
We procured this amazing specimen from an old timer in Oregon who said
this was the best sphere he ever made. It has a satin finish polish on the
sphere (which can be polished to a more brilliant shine with the right
equipment) and it was the best finish he could obtain because of all the
large vugs in the piece. This is a superb collection piece of a free floating
piece of Youngite for the base 6.8 x 5 x 1.8" (17.4 x 12.7 x 4.7 cm) and a
large 3.4" (86mm) sphere with nice brecciated faces with different patterns
from each angle. It has light pink colors to dark salmon. The vugs are
simply amazing! The deep botryoidal formations in the depths are visible
from three different vugs which connect to the same cavern...simply
stunning!
You will never find another specimen like this...it is absolutely a
One of a Kind Work of Art  

This sphere weighs 24.2 oz or 1.51 lbs (686g)
and measures 3.4 inches (86 mm) in diameter

The Base weighs 33.9 oz or 2.12 lbs (962g)
and measures 6.8 x 5 x 1.8 inches (17.4 x 12.7 x 4.7 cm)

Combined weight of these two items is 58.4 oz or 3.65 lbs (1657g)
Shipping will be in a USPS Large Flat Rate Priority Mail package.
Customs fees may be incurred for International buyers
Estimated shipping weight will be 5 lbs (2.7 Kilograms) which may be over
some countries international shipment limits, check your countries laws and
customs fees you may have to pay, before making purchase.
Item# YWY111435612
Extremely Rare Old Stock 3.4"
Sphere and 6.8" Display Base
Specimen of  Youngite

$465.00
Item # YWY02145256
RARE Old Stock XL
Youngite Display Slab

$129.00