Petrified Wood, Geodes, Crystals, Agates and Carvings

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$24.00 PR303b  These "Chrysanthemum" Flowers, frozen in stone, are natural occurrences of Celestite crystals in a limestone matrix.  Found in Liuyang County, Hunan Province in China. The Chrysanthemum Stone Flower has been highly prized as a marvel of nature.  Once polished and carved to show the wondrous flower, it is a soothing object for contemplation and meditation.

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The flower measures over 1 5/8" x 2" and rests in matrix measuring 3 1/4" x 3 1/4" x 1 5/8".  These make great decorator items.

chrysanthemum stone

Chrysanthemum Flower

$20.00 PR309c   This is something different for the rock collector.  Here is a very nice, extra good quality Candy Apple Geode from Mexico.  It measures 3" x nearly 3" x over 2 1/2" and has been cracked down the middle.  The inside and outside of the Geode have not been polished.  A true beauty.

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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.

candy apple geode

Candy Apple Geode

$35.00 PR308c   This is a very nice end cut of  Petrified Wood from the Black Hills of South Dakota. This was polished in our own lapidary department. It has nice rich brown Earth Tone colors and a neat natural texture on the unpolished surfaces. It measures 5" x 4 3/4" x 2 3/4" and has a smooth, highly polished face.  This beautiful Petrified Wood is unique and would enhance any table or desk top and would be a cool gift!

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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

South Dakota Petrified Wood

$10.00 PR311c  Here is something different from the Rock Shed's gift department.  These are faceted "Crystal" Gemstones in various colors.  The approximate average size of each Glass stone is 1 1/2" or 40 mm in diameter.  There is a wide array of colors including Red, Blue, Clear, Turquoise, Green and Light Blue.

You will receive three (3) of the items pictures at our choosing.  Unfortunately, there is NO choice in color.

Something very nice for that someone special.

glass "crystal" gemstones

"Crystal" Gemstones

$200.00 PR313b  This is a very cool large Labradorite Free Form. This beautiful specimen has a good color mix with a highly iridescent shine that changes colors as the light hits it from different angles. It measures 7 1/8" x 3 1/4" x 2 1/2" and weighs 4.5 lbs.  The specimen has some areas of Biotite Mica that shows up dull black. A really awesome item for a special person or just keep it for yourself!

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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.

labradorite

Labradorite

$35.00 PR310b   Here is a great addition to your office or home.  This is a select South Dakota Rose Quartz Slab.  It measures over 8" x 4 3/4" x  1 1/2" and has a deep rose color. This piece has a nice polish on the face.  It was cut and polished here at the Rock Shed.  Something very different for the collector or the gift giver. 

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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.

rose quartz free form

South Dakota Rose Quartz

$48.00 PR301b  Here is a very large, very beautiful Crystal Quartz Point.  This specimen measures 4 3/4" x 3" x 4" and has a smooth, natural finish with a hint of a Smoky Grey color.  This crystal has 6 facets and the upper portion is almost completely clear.  Close observations will reveal one larger "self healed" fracture and a small chipped area near the top that has been polished.  Neither of these natural flaws distract from the appearance or beauty of the Crystal. 

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.

crystal

Quartz Crystal

$45.00 PR312c  Here is a very pretty vase made from Marble.  It measures 6" x 6" tall and has a nice exterior polish.  This vase has an unique design which exhibits several colors and designs in different areas of the vase.  Definitely a one-of-a- kind treasure.

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Marble is a metamorphic rock consisting of Limestone but mostly composed of Calcite.  It is used extensively for sculpture, building materials and has many decorative uses.  The pure white Marble is probably the most common form known, but the characteristic swirls and veins of many colored Marble varieties are usually due to various mineral impurities such as Clay, Silt, Sand, Iron Oxides.

marble vase

Marble Vase

$16.00 PR307c  Here is a very cool Green Calcite Free Form from Mexico.  It has many, many crystals in various shades of green. It measures 4" x nearly 4 1/4" high x 3 1/2" wide and is nicely polished.  The bottom consists of Rhyolite. A very unique gift for someone special or add it to your own collection.

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Calcite is a Carbonate mineral that is most widely distributed on the Earth's surface.  It is a common constituent of sedimentary rocks with Limestone in particular.  A Calcite formation can take on many different shapes and sizes which is dependent on the location, ground water occurrence and temperature.  Calcite is usually white or colorless but can be gray, red, yellow, green, blue, violet, brown or black.  The deeper the color is usually indicative of the definitive impurities from the earth or water.

green calcite

Green Calcite

$18.00 PR305b  Here is something different for the polished rock collector.  This is a very nice, above average quality Brown Goldstone free form.  It measures 2 3/4" x nearly 2 1/4" x 1 3/4" and has a nice polish on the very deep Purple color.

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Goldstone is a type of synthetic glass made with Copper or Copper Salts in the presence of a reducing flame.  Under normal conditions, Copper ions meld into the Silica to produce transparent bluish-green glass.  When it cools, the Copper forms precipitates into small crystalline clusters.  The finished product can take a smooth polish and be carved into beads, figurines or other artifacts suitable as a semi-precious stone and is often mistaken for a natural material.

massage stone

Goldstone

$36.00 PR300b   Here is something different from the Rock Shed's gift department.  This is a hand crafted Rhodocrosite Buffalo.  The Buffalo is a pretty Pink color with lighter banding on one side. It measures  2 1/8" x 1 5/8" x 5/8".  A very nice piece of a hard to find item and would make a super gift for a special person!

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Click here for more carvings like this.

Rhodocrosite 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.

buffalo

Rhodocrosite Buffalo

$25.00 PR306c   Here is a very beautiful Crystal Quartz cluster.  It measures 4 1/4" x  2 1/4" x 3" and has a natural luster and shine.  This cluster has several completely full crystals and numerous smaller, sparkly crystals at the base.  A beauty to behold.

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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.

crystal

Quartz Crystal

$125.00 PR302c  This is a very pretty Brazilian Agate End Cut with a nice polish.  It measures 7 7/8" x 3 5/8" and has a good color scheme and very different design.  It weighs nearly 11 pounds. The agate has colorful bands of a pale yellow and different shades of grey surrounding the nice and pretty crystal cavity. This Brazilian Agate End Cut would make a great addition to any polished collection or it would make a great gift.

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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.

agate end cut

Brazilian Agate End Cut

$10.00 PR304c  This is an interesting Free Form made from Picasso Marble.  This material is from Utah.  It measures over 3" x nearly 3" x 5/8" and is nicely polished.  This specimen has a nice blend of Browns and Blacks which really enhances the appearance.

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Marble is a metamorphic rock consisting of Limestone but composed mostly of Calcite.  It is used extensively for sculpture, building materials and has many decorative uses.  The pure white Marble is probably the most common form known, but the characteristic swirls and veins of many colored Marble varieties are usually due to various mineral impurities such as Clay, Silt, Sand, Iron Oxides or Chert.

picasso marble free form

Picasso Marble Free Form

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