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featured specimen of this page
Rhodochrosite
Rhodochrosite with Boulangerite and Calcite from Trepca, Kosovo.


Ordering is very easy.  Just email us with the item number/numbers you are interested in
or you can just text us at 979-661-1370

mineralspecimens@teresarocks.com

"All our prices are negotiable.  Especially on the higher priced specimens and when buying multiple specimens.  Send us offers on anything"






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Museum Quality Rhodochrosite
A real "Statement Piece" here.  A large Museum Quality specimen displaying Drusy Pink Rhodochrosite Crystals with contrasting
Drusy Black Boulangerite Crystals on matrix with Orange Fluorescent Calcite Crystals as well as a couple Silvery Arsenopyrite
Crystals and Crystal Hairs of Jamesonite.  The bottom also displays Jamesonite Crystal Hairs with Golden Pyrite, Pink Rhodochrosite,
Boulangerite, and Calcite Crystals.  This incredible specimen sparkles like millions of tiny diamonds under the lights.  It was collected
at the Stari Trg Mine in Trepca, Kosovo.  This awesome specimen weighs 15 pounds 9 ounces and measures about 35 by 19 by 11 cm.
Stock #010  price on this Museum Quality specimen is $3400 or make offer

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Museum Quality Octahedral Purple and Green Fluorite from De'an Mine in China

Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
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Blue Agate Geode
Stock #007  price is $80  SOLD

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An impressive hollow Botryoidal Green over Blue Agate Geode with great Banding along the edges in this listing.
We self collected this excellent specimen from the Blue Agate Deposit near Hamilton, Hancock County, Illinois in
May of 2018.  This one weighs 1 pound 8 ounces and measures about 13 1/2 by 12 by 5 cm.
Stock #084  price is $60 plus shipping

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Huge top quality Quartz Geode

A huge mesmerizing hollow cavity glassy kind of Smoky Citrine Quartz Crystal lined Geode pair above in this listing.
The two halves fit together to form a whole Geode.  Geodes of this size and quality are almost impossible to find these days
from this area.  We have to travel down river several miles and park our canoe at a sandbar.  We then walk out in the middle
of the river, only about 3 feet deep, and dig under the sand to reach the bedrock and geodes.  This one was collected near
Kahoka, Clark County, Missouri in May of 2018.  This spectacular specimen weighs 55 pounds 8 ounces and measures about
42 by 26 by 24 when put together.  Shipping cost depends on where you live.
Stock #012  price for this awesome Geode is $500 plus shipping

"All our prices are negotiable.  Especially on the higher priced specimens and when buying multiple specimens.  Send us offers on anything"

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Classic rare Muscovite with Garnets
Above is a sensational Classic old timer specimen with big fanning Muscovite Book Crystals with a few tiny
Red Garnets embedded in the Muscovite and near the base and also in the matrix.  This one has a nice flat
bottom and sits up nicely for display.  It was collected years ago at the Harvard Mine in Greenwood, Maine.
This one weighs 3 pounds 4 ounces and measures about 22 by 13 by 6 cm.  You won't find another one this nice.
Stock #125  price on this classic is $300 plus shipping
SOLD KD

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Vanadinite on Goethite on matrix from Morocco
Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
Don't forget to get on our mailing list.  We send 1-2 emails per month when we get new specimens.



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Above is a very aesthetic Lithostrotionella Fossil Red Coral specimen with some matrix attached.  This is from the Devonian and
Silurian seas and about 375-425 million years old.  This came from a creek near Kahoka, Clark County, Missouri.  The Red Coral
is very hard to find.  Most are a light brown color.  This specimen weighs 5 pounds 12 ounces and measures about 16 by 15 by 12 cm.
Stock #013  price is $90 plus shipping

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Stock #014  price is $125  sold


"All our prices are negotiable.  Especially on the higher priced specimens and when buying multiple specimens.  Send us offers on anything"

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Above is a really choice specimen of modified Silver Galena on matrix with Rhodochrosite.  The bottom also displays
Jamesonite Wire Crystals with Boulangerite and sparkling Druse.  This is a very fine multi-mineral specimen that came
out of the Stari Trg Mine in Trepca, Kosovo.  It weighs 3 pounds 5 ounces and measures about 11 1/2 by 11 1/2 by 5 cm.
Stock #035  price is $175 plus shipping


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Blue Fluorite from Denton Mine in Illinois
Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
Don't forget to get on our mailing list.  We send 1-2 emails per month when we get new specimens.


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Red Quartz.  Not many of these left
Above is a really gorgeous large plate Geode portion of contrasting Red and Clear Quartz Crystals in this listing.  We purchased this one
from a guy up in Kahoka, Missouri while we were there for a few days of Geode hunting.  He has a Heat Treatment process that he uses
on some Geodes that brings out the Red color in variable degrees.  This process is much the same as the heat process they use in South
America to turn Amethyst Geodes into Orange Citrine Geodes.  This is a really great specimen that was collected in Kahoka, Missouri.
It weighs 4 pounds 14 ounces and measures about 20 by 16 by 8 cm.
Stock #058  price is $75 plus shipping


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How to place an order with us
Very easy
................................................................................................................................................
1.  Select the mineral specimen or specimens you are interested in by stock number listed on each specimen in the color green.  The prices are also all in green.

2.  Let us know what page each mineral specimen is on as well .
example Stock #044 on page 6, stock #037 on page 3 etc.

3.  All prices are negotiable especially when buying more than one specimen.

4. You can either email us or text us your order at 979-627-3594



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Spectacular huge Quartz Crystal Geode we self collected and opened
Above is a large extraordinary hollow brilliant sparkling Quartz Crystal lined Geode pair that my husband and I self collected from a river near
Kahoka, Clark County, Missouri.  We put in our canoe at the river and paddle down about 10 miles to a location we found many years ago.  It is
a grey shale outcropping at the bottom of the river under about a foot of sand or more depending on what happened during the last flash flood.
Sometimes it is covered in 4 feet of sand and we cannot collect anything.  This time we were lucky.  We spent the day here digging and pulled this one
out after about 3 hours.  Geodes of this size and quality are getting very rare to find.  This amazing display specimen weighs 41 pounds 5 ounces and
measures about 32 by 27 by 22 cm.  Stock #107  price is $400 plus shipping

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Above is a large cabinet size specimen of Golden Pyrite Crystals on matrix with a few pockets of Calcite Crystals in this listing.  These
are very uncommon to find from this location.  It was collected years ago at the Casteel #35 Mine, Viburnum Trend, Iron County,
Missouri.  This one weighs 1 pound 10 ounces and measures about 18 1/2 by 9 by 4 1/2 cm.
Stock #116  price is $80 plus shipping

"All our prices are negotiable.  Especially on the higher priced specimens and when buying multiple specimens.  Send us offers on anything"


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World Class negative and positive Fossil Fern Leaf from Mazon Creek in Illinois
Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
Don't forget to get on our mailing list.  We send 1-2 emails per month when we get new specimens.


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Above is a spectacular large Botryoidal Greenish Blue Agate Snowball Geode in this listing.  The locals call these Snowball Geodes when they have a
distinct Ball of either Quartz Crystals or Agate in the interior such as this.  They are rare to find and about 80 percent of them are Quartz and not Agate
as this one is.  We self collected this specimen ourselves from the Blue Agate Deposit near Hamilton, Hancock County, Illinois.  This location is on
private property and the owner does not let anyone on to collect except for us.  We have known him for years.  We have to dig for hours with shovels, picks,
and other digging tools to get these out.  A great time.  Lots of variety in colors and sizes.  This amazing specimen weighs 5 pounds 14 ounces and measures
about 16 1/2 by 14 by 10 1/2 cm.  Stock #074  price on this rare specimen is $150 plus shipping

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Here is another superb specimen my husband and I self collected at the Blue Agate Deposit near Hamilton, Hancock County, Illinois.  A large
hollow Botryoidal Light Bluish Green Agate with Frosted Quartz Crystals along the edges and Citrine Orange Quartz Crystals.  A beautiful
specimen that can be yours.  It weighs 5 pounds 2 ounces and measures about21 by 17 by 8 cm.  Stock #060  price is $60 plus shipping

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Gorgeous Pink Rhodochrosite
A phenomenal specimen of Pink Rhodochrosite Rosette Crystals with glossy Black Sphalerite Crystals, Silvery Arsenopyrite
Crystals, Pyrite, and Calcite Crystals on matrix.  This is a really showy multi-mineral specimen.  The matrix is Pyrite and
Arsenopyrite.  A really gorgeous specimen that came out of the Stari Trg Mine in Trepca, Kosovo.  This one weighs 3 pounds
5 ounces and measures about 13 by 12 by 5 1/2 cm.   Stock #115 price is $300 plus shipping

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A really fine hollow Orange Chalcedony Agate over Quartz Geode with Smoky Quartz along the edges.
We self collected this specimen in May of 2018 at the Blue Agate Deposit near Hamilton, Hancock County,
Illinois.  This one weighs 1 pound 15 ounces and measures about 12 1/2 by 12 by 6 cm.
Stock #085  price is $48 plus shipping

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Above is a very hollow cavity Botryoidal Blue Agat Geode with a thin band of Quartz along the edge in this listing.
My husband and I dug this specimen ourselves at the Blue Agate Deposit near Hamilton, Hancock County, Illinois.
This location is on private property and the owner only lets us on to collect because of liability reasons.  This very
fine specimen weighs 11.8 ounces and measures about 11 by 8 by 5 cm.  Stock #132  price is $38 plus shipping

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Rare big Raspberry Fluorite from Cave-in-Rock, Illinois
Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
Don't forget to get on our mailing list.  We send 1-2 emails per month when we get new specimens.


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An impressive hollow interior Olive Green over Blue Botryoidal Agate above.  This one also displays
sparkling Quartz Druse along one edge with Agate Banding along the other edge.  My husband and I
dug this one ourselves at the Blue Agate Deposit near Hamilton, Hancock County, Illinois.  This
location is on private property and the owner will only let us on because of liability reasons.  We have
know him for years.  This one weighs 2 pounds and measures about 12 by 11 by 6 cm.
Stock #133 price is $60 plus shipping

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A very uncommon and rarely seen specimen of Chrysocolla over Dolomite and matrix.
We picked this one up from an older collected we acquired.  A pretty obscure piece that
was collected many years ago at the Copper Chief Mine in Clark County, Nevada.  This
one weighs 1 pound 8 ounces and measures about 12 by 10 by 5 cm.
Stock #134  price on this old timer is only $50 plus shipping

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Brilliant sparkling Vanadinite var Endlichite with Calcite and Descloizite on matrix in this listing.
This showy 2 sided specimen came out of the Erupcion Mine, Los Lamentos, Chihuahua, Mexico.
It weighs 6 ounces and measures about 9 by7 by 3 cm.  Old timer specimen.
Stock #135  price is $45 plus shipping

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Beautiful Rosasite Crystals
Above is a stunning specimen of Turquoise colored Rosasite Crystals on matrix with Goethite and glassy
Gypsum on the side.  This old timer specimen was collected at the Ojuela Mine, Mapimi, Durango, Mexico.
It weighs 10 ounces and measures about 8 1/2 by 7 by 4 cm.  Stock #136  price is $75 plus shipping

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A rare old timer cabinet size specimen of lustrous terminated and Double Terminated Apophyllite
Crystals over tiny sparkling Apophyllite Crystals on matrix.  Some areas have an orangish tint.
A really outstanding specimen that came out of the Valenciana Mine, Guanajuato, Mexico.  This one
weighs 1 pound and measures about 18 by 11 by 4 cm.  Stock #137  price is $125 plus shipping

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Polished Malachite specimen from the Republic of Congo
Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
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A gorgeous specimen of Iridescent Copper, Pink, and Gold Chalcopyrite with minor Calcite in this listing.
A showy piece that came out of the Ray Mine in Superior, Arizona.  This one weighs 1 pound 5 ounces and
measures about 9 by 6 1/2 by 5 cm.  Stock #138  price is $60 plus shipping

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Colorful Iridescent and Golden Chalcopyrite Crystals with lustrous Dolomite Crystals and Quartz Druse
on matrix with numerous Galena Crystals in this listing.  The front has a cavity lined in Dolomite
and Chalcopyrite Crystals.  A beautiful cabinet size specimen that came out of the Brushy Creek Mine in
the Viburnum Trend, Reynolds County, Missouri.  It weighs 2 pounds 1 ounce and measures about 13 by
11 by 6 cm.  Stock #139  price is $40 plus shipping


.............................................................
How to place an order with us
Very easy
................................................................................................................................................
1.  Select the mineral specimen or specimens you are interested in by stock number listed on each specimen in the color green.  The prices are also all in green.

2.  Let us know what page each mineral specimen is on as well .
example Stock #044 on page 6, stock #037 on page 3 etc.

3.  All prices are negotiable especially when buying more than one specimen.

4. You can either email us or text us your order at 979-627-3594



CLICK ON PICTURES TO MAKE THEM LARGER
Classic amazing Fluorite from Saxony, Germany
A really awesome old timer cabinet size specimen of Fluorite with the bottom middle having a Green
Fluorite core.  This is a rare specimen from a very old collection we acquired last year.  The specimen
came out of the mines in the Saxony-Anhalt area of Germany.  This one weighs 2 pounds 14 ounces and
measures about 15 by 13 by 6 cm.  Stock #140 price is a very reasonable $325 plus shipping

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See many of our current and past specimens on our YouTube Channel below

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Sparkling multi-mineral specimen from Trepca
Big Silver cubic crystals of Arsenopyrite all over this specimen with sparkling Druse of light Pink Rhodochrosite
and Black Boulangerite.  This really awesome multi-mineral specimen also displays numerous terminated Quartz
Crystals with some having Smoky Terminations.  There is also brilliant Golden Pyrrhotite on one end.  The bottom
matrix is Arsenopyrite and Quartz.  This is a spectacular display piece that came out of the Stari Trg Mine in Trepca,
Kosovo.  It weighs 2 pounds 2 ounces and measures about 15 1/2 by 10 by 5 cm.  Stock #141  price is $345

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Bisbee, Arizona Malachite with Cuprite on matrix
Sold.  With the many contacts we have, this is the quality of mineral specimens we come across and list here
Don't forget to get on our mailing list.  We send 1-2 emails per month when we get new specimens.


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many more specimens to be listed soon

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.............................................................
How to place an order with us
Very easy
................................................................................................................................................
1.  Select the mineral specimen or specimens you are interested in by stock number listed on each specimen in the color green.  The prices are also all in green.

2.  Let us know what page each mineral specimen is on as well .
example Stock #044 on page 6, stock #037 on page 3 etc.

3.  All prices are negotiable especially when buying more than one specimen.

4. You can either email us or text us your order at 
979-661-1370



We take Gold and Silver Bullion, Coins, and Rounds as payment at current market value for any specimens we have.

We prefer checks and money orders but will take Paypal.

The email address below is also our paypal account to pay us


mineralspecimens@teresarocks.com




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"All our prices are negotiable.  Especially on the higher priced specimens and when buying multiple specimens.  Send us offers on anything"

See many of our current and past specimens on our YouTube Channel below

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