Petrified Wood, Geodes, Crystals, Agates and Carvings

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Item Description

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$55.00 PR200b   This is a very nice Moroccan Geode.  The pretty Geode measures over 7" x nearly 5 7/8" x 4 1/2"; weighs 5 1/2 pounds and has an unpolished finish.  It has been broken open to show the deep cavern with the the beautiful sugary White and sparkly Quartz Crystals inside. Very nice indeed!

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Click here for more Geodes like this!

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.

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Moroccan Geode

$180.00 PR201b   Here is an extraordinary piece; a large specimen of an excellent quality Amethyst Geode section.  This unique cluster has excellent sparkly rich Purple crystals covering the interior with very nice color.  It measures nearly 5 3/4" wide x 6 3/8" x almost 7 1/4" tall and weighs just under 6 pounds.  Pictures don't really do this piece justice but look at all the different views. This spectacular item is from Uruguay.

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Amethyst is a purple variety of Quartz often used as an ornament.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

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Amethyst Geode

$35.00

PR202b  This is a very nice, above average Brazilian Agate with exceptionally nice natural colors and a very unique design.  This lovely agate has a beautiful center with very nice banding.  It measures almost 4 1/4" x 2 1/2" x 1/4" thick and has been highly polished on all the surfaces.  This is a beautiful work of nature and has great agate characteristics and colors.               

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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.

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Brazilian Agate

$65.00 PR203c Here is an absolutely awesome specimen of Nebraska Chalcedony or often called Blue Agate from Nebraska.  This very unique piece was cut and highly polished on the face to show the Agatized material.  That material is highly florescent and shows some gorgeous green colors under Short Wave ultra-violet (UV) light.  This specimen measures 6 1/2" x 7 1/4" x over 1 3/4" thick and weighs almost 2 1/2 pounds.  The lovely piece has an all natural finish with lots of character and is a one of a kind creation of the Rock Shed's own Lapidary department.  

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Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite.  Chalcedony has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black.

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Nebraska Chalcedony

$75.00

PR204c  Here is a very nice Blue Celestite Geode from Madagascar.  It measures 4 3/8" x 3 3/4" x nearly 4".  This very interesting and pretty Geode has a very detailed Blue interior with many, many well-defined 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.

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Celestite

$100.00

PR205c  Here is a very different item here at the Rock Shed.  This is an outstanding quality Poly Chrome Jasper specimen.  The fabulous Poly Chrome has been highly polished on all surfaces to show the gorgeous variety of colors.  It measures nearly 3 5/8" wide x almost 3 1/8" x 8 3/4" tall and has a flat cut on the bottom so it stands upright for display.   A very unique and beautiful addition to any rock collection. 

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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.

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PolyChrome Jasper

$18.00 PR206c   Here is a very nice, unpolished piece of natural Ruby from India.  It measures 2" x almost 1 3/4" x nearly 5/8" and has a real pretty darker Purple color with specs 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.


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Natural Ruby

$100.00 PR207b   Here is something different for the mineral or polished rock collector.  This is a gorgeous specimen of Rhodochrosite.  The rock has a gorgeous Rose Pink color with various different pretty Pink shades in the excellent banding.  It measures 2 3/4" x 2 1/4" x 7/8" thick and has a nice polish on the top side.   A very nice piece of a hard to find item.  It would make a nice addition to any mineral or polished rock collection.

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Rhodochrosite is a Manganese Carbonate mineral.  It is typically a rose-red color, but impure specimens can be shades of pink to pale brown.  It is used as a key component of low-cost stainless steel and certain Aluminum alloys.  Quality banded specimens are often used for decorative stones and jewelry, although it is relatively soft and difficult to cut.


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Rhodochrosite

$60.00

PR208c  Here is a beautiful and unique Amethyst Crystal Cluster from Vera Cruz, Mexico.  It measures almost 4 7/8" x 3 1/2" x over 2 1/2" tall.  It has a nice Purple tipped crystals on a sparkly pale green matrix with lots of tiny clear crystals throughout and displays very well.  A very fragile but gorgeous piece!

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Amethyst is a purple variety of Quartz often used as an ornament.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

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Vera Cruz Amethyst

$18.00

PR209b  This is a very nice, above average quality Onyx Free Form from Mexico.  This nice hand carved Onyx  measures nearly 4" tall x almost 2 3/4" and has a smooth unpolished finish. It has a colorful creamy pale green background with lighter and brown accents.  This Free Form could be used as a pencil holder or just use it for display. A very beautiful addition to any rock collection. 

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Onyx is a banded variety of Chalcedony which in turn is a form of Quartz.  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.  The name has sometimes been used incorrectly to label other banded lapidary materials, such as banded Calcite.  This type is found in Mexico and Pakistan and is often carved, polished and sold.  The material is much softer than true Onyx and much more readily available. 

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Onyx Free Form

$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.

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Polished Tumbled Stones

Set of Three

$90.00

PR211b  Here is an amazing discovery!  This is a Meteorite from Campo del Cielo in Argentina that fell to earth some 4,200 to 4,700 years ago.  It measures 2 5/8" x 1 5/8" x nearly 1 1/8" thick, weighs 8 ounces and has a natural sheen on the Black metallic finish.   These Meteorites are special in that they have "finger print" marks on the surface which are the result of the melting of the material upon entering the atmosphere from outer space. A cool gift or just keep it for yourself.

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A Meteorite is a natural object originating in outer space that survives an impact with the Earth's surface without being destroyed.  There are 3 types of meteorites: stony, which are mainly composed of Silicate minerals; Iron, which are largely composed of metallic Iron-Nickel; and stony-Iron, which are composed of both types of media.

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Campo del Cielo Meteorite

$100.00

PR212c  This is a beautiful Landscape Quartz Crystal.  It has multiple tips with excellent clarity showing the "landscape like" Chlorite inclusions including a couple tiny rutiles.  This lovely specimen measures nearly 4" x 2 3/8" x almost 1 3/4" and has a natural finish on all sides.  A couple edges do have some very minor dings that are reflected in our price but it still displays very well.  A real beauty. 

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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.

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Landscape Quartz Crystal

$40.00

PR213b   Here is an amazing discovery!  This is a pretty Las Choyas or Mexican Coconut Geode and has been cut and nicely polished on the face.  This geode has a very pretty bluish grey around a gorgeous smokey Quartz Crystal center cavity.  The geode measures 4 3/4" x almost 4 3/8" x nearly 2 1/8" thick and weighs over 2 pounds.  This geode is from Chihuahua, Mexico. Very nice!

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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.

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Las Choyas Geode

$300.00 PR214b  Here is something special for a polished rock collector.  This is n exceptionally nice Labradorite Free Form.  This beautiful and large specimen has a good color mix with a highly iridescent "Blue Gold" shine that changes colors as the light hits it from different angles. It measures almost 11" x 5 7/8" x nearly 2 4/8" thick and weighs almost 11 3/4 pounds.  It's much nicer than our pictures can show.  Very, very nice!

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Labradorite is a Feldspar mineral that occurs in large Crystal masses in Anorthosite and shows an iridescence or "play of colors."  Gemstone varieties of Labradorite exhibiting a high degree of iridescence are Spectrolite, Moonstone and Sunstone.  High quality samples with good iridescent qualities are desired for jewelry.

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Labradorite

$15.00

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PR217b  Here's a great new item, an Amethyst Tree. This great item has artfully placed resin in the shape of a tree trunk on an Amethyst cluster with several polished Amethyst stones. It measures approximately 6 1/2" tall with the polished stones being about 1/2". The wires that the stones are attached to the trunk bend quite easily to allow one to design the display to their liking. This is a great piece on it's own or a great addition to dress up your collection.

This is a similar to like item as they are all very close to appearance and size and you will receive 1 tree similar to the ones in the photo.

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Amethyst is a purple variety of Quartz often used as an ornament.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

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Amethyst Tree

$40.00

PR218c  This is a gorgeous Ocean Jasper Free Form from Madagascar that will make a great addition to any collection.   This beautiful free form has a very interesting composition, great color and pattern.  It's base color is a deep dark Green and Brown with lots of "eyes" and small nice small crystal cavities scattered about.  The lovely piece measures almost 2 3/4" wide x nearly 1 1/2" x 4" tall and has been nicely polished on all surfaces.  Very cool indeed!

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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.

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Ocean Jasper

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