Petrified Wood, Geodes, Crystals, Agates and Carvings

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$600.00 PR201b   Here is an extra large of excellent quality Crystal Quartz cluster from Arkansas.  It measures approximately 13" x 10 1/2" x 5 1/2" and has not been polished.  This unique cluster has several different Crystal formations including barnacles, cathedrals, lasers, manifests, and tabular sections.  This clusters rests without a stand or base and has many areas of rainbow iridescence. 

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Quartz is the second most common mineral in the Earth's continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

quartz crystal cluster

Crystal Quartz Cluster

$22.00
 
PR203b  Here is an extra large, above average quality specimen of Petrified Wood end cut from the Black Hills of South Dakota.  It has been highly polished on one side and  measures 5 1/4" x 3 3/4"x over2 1/4".  The wood has a nice blend of Earth tone colors and has a very different, irregular shape and design. 

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Petrified Wood is a type of a fossil as it consists of fossil wood where all the organic materials have been replaced with minerals while retaining the original structure of the wood.  These minerals are most often Silicates such as Quartz.  Other minerals, Manganese, Iron and Copper, in the water or mud during the petrification process give Petrified Wood a variety of color ranges: black - Carbon; green/blue - Copper; red/brown/yellow - Iron.  Petrified Wood can preserve the original structure of the wood in all its detail all the way down to the microscopic level.  Structures such as tree rings and the various tissues are often observed features.  Although Petrified Wood can be found worldwide, it is rather rare in larger quantities and at times can be difficult to obtain by the average collector.

petrified wood

Petrified Wood

$15.00

PR210b  Here are sets of three (3) nicely polished tumbled stones. They range from Red Jasper, Fancy Jasper, Brecciated Jasper and Green Aventurine.  They each measure approximately 1 1/4" x 2 1/2" in size and have a very nice polish.  The stones have a pretty mix of colors including Green, White, Tan, Brown and Red.  A great gift or just keep them for yourself.

Unfortunately there is NO additional choices other than what is listed and no choice or individual selection  in your set of three (3) stones. We do guarantee a good selection however.

Jasper, or spotted stone, is an opaque, impure variety of Quartz that is usually red, yellow or brown in color.  Some Jaspers simultaneously exhibit several variants such as banding, flow patterns, dendrites or color variations.  This results in what appears to be scenes or images in a cut section of the Jasper.

 Aventurine is a form of Quartz that is characterized by its translucent and mineral inclusions that give it a shimmering or glistening effect called "aventurescence".  The most common color is green but it may also be orange, brown, yellow, blue or grey.

vase

Polished Tumbled Stones

Set of Three

 

 

24.00

 

PR206c   Here is a very nice, unpolished piece of natural Ruby from India.  It measures 1 5/8" x 1 3/4" x nearly 1" and has a real pretty, darker Purple with specks of black Tourmaline.  It would make a nice addition to any mineral or polished rock collection.

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A Ruby is a variety of the mineral corundum (aluminum oxide). The color comes mainly from the chromium element. The Ruby is considered one of the four precious stones, together with the sapphire, the emerald, and the diamond. Rubies were found for centuries in Burma.  They have also been found in Thailand, Sri Lanka, Madagascar, Vietnam, Nepal and Pakistan. Rubies have been found in the US states of Montana, North and South Carolina.


natural ruby

Natural Ruby

$12.00

PR207b  Here is a very nice, above average quality, larger Pyrite nugget with Crystals.  This material is from Peru.  It measures 4 1/4" x  2 3/4" x 1 1/2" and has a natural shiny finish.  This beauty is a one of a kind, very well defined specimen that will not be duplicated.

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Pyrite is an Iron sulfide with an isometric structure.  It is brittle and can break or powder easily.  Its metallic luster and brass yellow hue have earned it the nickname of "fool's gold" due to many miners mistaken it for the real thing. 

pyrite

Pyrite

$10.00

PR211b  Here is a great looking double Frog carved from Soapstone.  The larger outer Frog measures 4" x 3"  x 1 3/4"with the inner Frog measuring 2 1/2" x 1 1/4".  The inner Frog was carved without disturbing the outer Frog.  It is one piece!!  A very nice addition to any collection.  Item will be similar to item in photo.

Soapstone, also known as steatite or "soap rock", is a metamorphic rock type of a Talc-schist.  It is largely composed of the mineral Talc and is rich in magnesium.  It has been a well known carving media for thousands of years.  It is a relatively soft substance and may feel soapy to the touch, thus the name Soapstone.  It is chemically stable and resistant to acid.  Soapstone is often used in carvings, inlaid design, sculpture, coasters, and kitchen countertops and sinks.

soap stone carving frog

Soap Stone Frog

$35.00

PR212c Here is a new item at the Rock Shed.  This is a beautiful Rutilated Quartz Crystal.  This specimen measures 3 1/8" tall x 1 1/8" x 1 1/8" and has a smooth polished finish with a nice clear or transparent color.  This crystal has been faceted on all sides and the darker lines are Tourmaline.  A real beauty of a Crystal. 

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Quartz is the second most common mineral in the Earth's continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

rutilated quartz crystal

Rutilated Quartz Crystal

$130.00

PR213c  Here is a really great find!!  This is a nice, above average quality, large Dugway Geode from Utah.  It  measures 8 3/4" x 8" x 4" and has a nice polish on the front face. The inside of the cavity is lined with fine druzy Quartz Crystals with a hint of Lavender color. The Geode has grey felt on the bottom surface and displays very well.  Just beautiful!

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Geodes are geological rock formations which occur in sedimentary and certain volcanic rocks.  They are essentially rock cavities or vugs with internal Crystal formations or concentric banding.  The exterior is generally Limestone while the interior contains Quartz Crystals and/or Chalcedony deposits.  If the Geode is completely filled with Crystal, being solid all the way through, it is then called a nodule.

dugway geode

Dugway Geode

$16.00

PR202b  This is a nice, above average Brazilian Agate end cut with great color and a very unique design.  It measures 4 1/2" x 2" x 2" and has been polished on the front face.  This is a beautiful work of nature and has great characteristics especially when held in the bright light. This material is from Mexico.

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Agates mostly occur as nodules in volcanic rocks or waters containing Silica in solution which is possibly derived from the decomposition of Silicates in the lava.  The Siliceous matter is deposited in regular layers resulting in the banded or striped formation.  It is very unlikely that you would ever find an exact duplicate of any type of Agate, Brazilian or other.

laguna agate end

Brazilian Agate End

$145.00

PR204c  Here is a very nice, larger, light Blue Celestite Geode from Madagascar.  It measures 7 1/2" x 5 3/4" x 4".  This is a very interesting Geode in that it has a very detailed Blue interior with several well-defined larger Crystal points.  Definitely something different for the mineral or rock collector.

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Celestite, or Celestine, is a mineral consisting of Strontium Sulfate.  The mineral is named for its occasional delicate blue color.  This mineral occurs in Crystals and in compact massive, fibrous forms.  It is mostly found in sedimentary rocks and is often associated with Gypsum, Anhydrite and Halite.  The mineral is found worldwide usually in small quantities.  The pale blue variety are found in Madagascar.

celestite

Celestite

$25.00 PR200c   This is a very nice, larger Moroccan Geode.  The Geode measures nearly 5 3/4" x 5" x 2" and has no polish.  It was broken along a natural fissure to show the very pretty White sparkly Quartz Crystals inside. Very nice indeed!

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Geodes are geological rock formations which occur in sedimentary and certain volcanic rocks.  They are essentially rock cavities or vugs with internal Crystal formations or concentric banding.  The exterior is generally Limestone while the interior contains Quartz Crystals and/or Chalcedony deposits.  If the Geode is completely filled with Crystal, being solid all the way through, it is then called a nodule.

 geode

Moroccan Geode

$50.00

PR205c  Here is a very different item here at the Rock Shed. This is a pretty Variscite Free Form from Utah.  This nice specimen measures approximately 2 3/4" x 3 3/4" x 2" and has been highly polished on one side to show the lovely green colors it is made of.   A very unique and beautiful addition to any rock collection. 

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Variscite is a fairly rare phosphate mineral that is sometimes confused with Turquoise. Variscite is usually a much brighter green color and was first described in 1837. It was named for Variscia, the historical name of Vogtland, Germany. Variscite is found in Utah and Nevada in the United States and in Germany, Australia, Poland, Spain and Brazil.

variscite

Variscite

$40.00

PR209b  Here is a very pretty Carnelian Agate Free Form.  It measures approximately 4 5/8" x 2 1/4" x 1 3/8" and has been nicely polished.  It has a colorful reddish brown background and white accents in a very unique pattern.  A very beautiful addition to any rock collection. 

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Carnelian is a red or reddish-brown variant of Chalcedony but also may come in the colors of orange and pink.  It is quite common and usually found in translucent pebble form.  It is found in several areas of Europe, Iceland and Madagascar.

carnelian free form

Carnelian Agate Free Form

$40.00

PR208c  This is a new  and different item at the Rock Shed, a Orthoceras Fossil Plate from Morocco.  This plate measures just over 11 1/2"  in diameter and has a nice polish.  The plate is hand carved so it is slightly irregular in shape. The plate is a soft Grayish Brown color and has a nice Orthoceras fossil in one area with many, many other fossils scattered throughout. A nice item for any collection.

Click here for more fossils like this.

Orthoceras was a marine cephalopod, this particular species was straight shelled and they thrived some 400+ million years ago in the Paleozoic era. 

 

fluorite free form

Fossil Plate

$10.00 PR214b  Here is something different for the mineral collector.  This is a set of one cube and one polyhedron carving made from Mexican Onyx.  The cube measures 2 1/4" square and the polyhedron measures 2 3/8" on all sides.  These objects have a soft Beige and White color with other pastel colors mixed in.  Each has its own unique design as well.  A great starter for any collector.  Items will be similar to items pictured.

Onyx is a banded variety of Calcite.  The colors of its bands range from white to almost every color except shades of purple, blue and black.  It is used for vases, bowls, beads, cabochons and other items.  This type of Onyx is found in Mexico and Pakistan.  It is often carved, polished and sold in a variety of different things. 

carving

Mexican Onyx Cube and Polyhedron

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