Petrified Wood, Geodes, Crystals, Agates and Carvings

Page 8  Go To Page: [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 9 ] [ 10 ] [ 11

McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Cost

Item Description

Click Picture
for Larger Image

$60.00

PR800c  This is an awesome specimen of Petrified Wood from South Dakota.   It has a beautiful array of dark Brown colors in the highly polished face accented by various different textures around the edge.  The nice polish brings out the wonderful character of the wood showing the true beauty.  This larger Petrified Wood measures nearly 7 1/8" across the widest x nearly 6 5/8" x 4 7/8" tall and weighs just over 7 1/2 pounds.  This lovely piece was cut and polished here in our own Lapidary department.  Exceptionally nice!

Another photo 

Another photo

Another photo

Click here to view more Petrified Wood specimens!

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.

polished rock

Petrified Wood

$50.00 PR801b  This is a gorgeous Rose Quartz heart from Madagascar.  It measures nearly 4 1/2" wide x almost 4 1/8" x nearly 1 1/4" thick and has a nice polished finish.  The exceptional heart has a beautiful Rosy Pink color with amazing sparkly highlights and inclusions.  A great collectors item or a super gift. 

Another photo

Another photo

Another photo

Click here to see more hearts!!

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.

polished rock

Rose Quartz Heart

$40.00 PR802c  Here is a very nice piece of Petrified Wood from the Black Hills of South Dakota.  It measures almost 5 1/4" x nearly 4 1/2" x almost 1 7/8" thick and has a highly polished finish on the face.  It has a great design, a nice variety of different Grays, dark Browns, Tan, Black and even Reds with lots of character.  As you can see from the photos there are some fractures but they do not affect the stability of this piece.  This awesome example was cut and polished in our own Lapidary section.  Very cool!

Another photo

Another photo

Another photo

Another photo

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.

polished rock

South Dakota Petrified Wood

$30.00

PR803c   Here is an amazing discovery!  This is a very nice half of a Las Choyas or Mexican Coconut Geode that has been cut to show the beautiful Quartz crystals inside.  The pretty geode half measures 4" x 3 1/2" x almost 2" thick and has a nice polish on the face.  This geode is from Chihuahua, Mexico. Very nice!

Another photo 

Another photo 

Another photo

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.

polished rock

Las Choyas Geode

$175.00 PR804c  This is a very nice Natural Float Copper specimen.  This large awesome Copper piece is from the Glacial Drift in Octonagon County of the Upper Peninsula of Michigan.  Found naturally in a rock matrix.  It has been partially smoothed, polished and then covered with a clear coat on the upper surface to show the gleaming natural Copper color.  It measures approximately 7" wide x almost 4 1/2" x 3 1/2" tall and weighs just over 9 pounds.  The pictures don't show the true beauty!

Another photo

Another photo

Another photo

Another photo

Click here to view  more Native Copper specimens !!

Copper is a reddish colored metal with a high electrical and thermal conductivity.  It has its characteristic color because it reflects red and orange light and absorbs other frequencies in the visible spectrum due to its band structure.  It is in the same family as Silver and Gold and is a malleable metal.  It is beautiful natural or polished.

polished rock

Float Copper

$140.00

PR805c  Here is a very beautiful slab of a Brazilian Agate with an outstanding design.  It measures 8 5/8" wide at the longest distance x over 7 3/4" x almost 7/8" thick and has a nice Brown edge surrounding the Gray and Blue center with unique banding.  It has a very nice polish on the face bringing out the wonderful character.  Just extremely nice.

Another photo  With Back lighting

Another photo

Another photo

Another photo

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.

polished rock

Brazilian Agate

$70.00 PR806b  This is a gorgeous and very beautiful Green Malachite specimen from South Africa.  This very pretty specimen has a lovely array of various green colors with lighter accents.  It is highly polished all around the top surfaces.  The overall size is 4 1/8" x almost 3 1/2" x nearly 1 5/8" thick.  A great addition to your collection. 

Another photo

Another photo

Another photo

Malachite is a Copper Carbonate mineral that often forms botryoidal, fibrous or stalagmitic masses.  It is often the result of the weathering of Copper Ores and is commonly found with Azurite, Goethite and Calcite.  It is typically associated with Copper deposits including Limestone which is the source of the Carbonate.  Malachite is found in many regions world wide and is usually shaded green in color.

polished rock

Malachite

$50.00 PR807b  Here is awesome and nicely polished Rutilated Quartz Crystal with lots of character.  This gorgeous beauty measures 2 3/8" x over 1 3/4" x 3" tall and has a good clarity throughout the crystal.  This awesome Crystal has a beautiful shape with many sparkly rutiles and other inclusions that only add to it's character.  It does have a couple very minor dings along the edges and tips that are reflected in our price.   Very, very nice!

Another photo

Another photo

Another photo

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.

polished rock

Rutilated Quartz Crystal

$40.00 PR808b  Here is something different for the mineral or rock collector.  This is a beautiful specimen of Prehnite from South Africa.  The lovely Prehnite has gorgeous Green colors mixed with areas of good clarity and a nice assortment of inclusions all in an interesting design.   It measures almost 4" wide x 4 7/8" x 1 7/8" thick and has a very nice polish on the cut face done here at the Rock Shed.  A pretty item for the person who has everything.

Another photo

Another photo

Another photo

Prehnite is a semitransparent to translucent mineral with a chemical formula of calcium and aluminum.  It normally ranges in color from yellow-green to apple green.  Prehnite is a very hard mineral ranging from 6 to 6.5 on the Mohs scale  It is in the orthorombic crystal class usually found in radiating botryoidal (grape like) forms. It frequently occurs with epidote and quartz minerals.

polished rock

Prehnite

$32.00 PR809c  This is a stunning "Splash" Copper free-form made from native copper from the Keweenaw Peninsula in upper Michigan.  It has a very pretty Copper color where it's been smoothed and polished.  The balance is a natural oxidized green with a clear coating over the entirety giving a shiny finish from all directions.  This lovely creation measures 6 1/8" x nearly 4 5/8" x 1/4" thick with a great unique character.  Very different and beautiful!

Another photo

Another photo

Another photo

Copper is a reddish colored metal with a high electrical and thermal conductivity.  It has its characteristic color because it reflects red and orange light and absorbs other frequencies in the visible spectrum due to its band structure.  It is in the same family as Silver and Gold and is a malleable metal.  It is beautiful natural or polished.

polished rock

Splash Copper

$120.00 PR810c   Here is something different from the gift department at the Rock Shed.  This is a very cool Poly Chrome Jasper Free Form.  Highly polished on all sides, it has amazing color, ranging from cream to yellowish brown and green with hints of purple in an excellent Poly Chrome design. This gorgeous piece measures nearly 8" tall x 4 1/8" x 3 5/8" thick.  It would make a great addition to any rock collection or a beautiful decoration item in your home.

Another photo

Another photo

Another photo

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.

polished rock

Poly Chrome Jasper

$36.00 PR811b  This is a very pretty Marble vase from China.  It measures almost 6" tall x 3 1/4" in diameter and has a nice polish.  It has a nice soft mix of colors including Yellow, White, Grey, Green, Tan and Brown colored accents.  A great gift or just keep it for yourself.

Another photo

Another photo

Peacock Marble is from Southwest China and formed in Limestone by heat and pressure in the earth's crust. Recrystallization during Himalaya formation caused the limestone to change in texture and makeup. Fossilized materials along with it's original carbonate minerals, recrystallized and formed large, coarse grains of calcite. Impurities present in the limestone during the recrystallization affected the mineral composition of the marble.  The minerals that result from the impurities give the marble up to ten different colors. The corresponding colors and minerals that can be found: Green - Serpentine; Purple - Manganese spar; Brown - Iron; Gray - Silicon Dioxide; Red - Hematite; Orange - Iron; White - Calcite; Violet - Iron Manganese; Yellow - Limonite; Blue - Copper, Cobalt, Chromium; Black - Carbon, Iron, Manganese. Peacock Marble is also called "seven color Jade" in local language.

marble vase

Marble Vase

$28.00

PR812b   This is a very pretty, larger Onyx vase from Pakistan.  It has a nice soft mix of colors including Greens, Oranges, Cream, Tan and various Brown colored accents.  It measures 3" in diameter x over 7 3/4" tall and has a nice polish.  A great gift or just keep it for yourself.

Another photo

Another photo

Another photo

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. 

polished rock

 Onyx Vase

$40.00 PR813c  Here is a beautiful and unique Amethyst Crystal Cluster from Vera Cruz, Mexico.  It measures 3 1/8" x nearly 2 1/2" x almost 1 1/4" tall.  It has a nice pale 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!

Another photo

Another photo

Another photo

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.

polished rock

Vera Cruz Amethyst Crystal Cluster

$14.00 PR814c  Here is something different from the Rock Shed.  This is a very nice Optical Calcite specimen with good clarity and excellent fluorescence.  The Calcite has an interesting color with it's pale Peach to Pink.  It all shows a brilliant Pink under long wave Ultraviolet Light and blue under short wave.  It measures 2 7/8" x 2 1/8" x 1" thick.  Something different for your polished rock collection!

Another photo

Another UV photo

Another UV photo - short wave

Click here to buy Ultraviolet Lamps

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.

polished rockpolished rock

Optical Calcite

$65.00 PR815c  Here is a nice specimen of a polished Garnet from India.  It measures approximately 2 1/8" in diameter and has a nice shiny finish on all of the surfaces.  It has a great design, a nice variety of darker Reddish Brown colors with lots of character.  Very cool!

Another photo

Another photo

Another photo

Garnet is included in a group of minerals that have been used since the Bronze Age as gemstones and abrasives.  Garnets are most often as seen in red, but are available in a wide variety of colors spanning the entire color spectrum except blue.  There are six common species of Garnet that are recognized by their chemical composition:  Pyrope, Almandine, Spessartite, Grossular, which includes Hessonite and Tsavorite, Uvarovite and Andradite.

polished rock

Garnet

I'm on Page 8
Go to Page: 
[ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 9 ] [ 10 ] [ 11 ]

Click on the link below if  you would like to get an idea of shipping cost on your package
Shipping Calculators

Ordering information and instructions

The Rock Shed
515 1st Street
Keystone, SD  57751

Hours: Monday - Saturday 9:00 AM to 6:00 PM
 Toll Free Order Line:  1-866-354-0894
Sunday 1:00 to 6:00 PM
 Information:  605-666-4813
email:  info@therockshed.com

Home
 Long Gemstone Beads Short Beads I Amber & Necklaces I Bracelets I Earrings I Sterling Pendants
Rosaries I Fossils I Copal I Polished Rock
I Educational Kits I Bookends I Gold Specimens I Gallery
Hearts I Septarians I Spheres I Eggs I Minerals I Gemstone Lights I Books I Plastic Stands I Brass Stands
Rock Tumbler Page I Grit and Accessories I Tumbling Rock I Rough Rock I Landscape Rock
Lapidary Grinders I Lapidary Saws I Diamond Blades Agates I Findings I Clearance
Shipping Information I History I Auctions
I Pictures I Links