Petrified Wood, Geodes, Crystals, Agates and Carvings

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$75.00 PR404b  Here is something different here at the Rock Shed. This is an above average quality Mexican Lace Agate Slab.  It measures 9 3/4" x 3 5/8" x 1/2" and has a nice polish on one side.  This beauty has very nice banding typical of Mexican Lace with a sparkly crystal cavity in one area. There are several other small  cavities scattered about. This pretty piece was cut and polished here in our own Lapidary Department. It comes with a plastic display stand.  Very nice!

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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.    3-17-11

 agate

Mexican Lace Agate

$16.00 PR403c  Here is something different for any collector.  Here is a very nice, very pretty Selenite Crystal from Utah.  It measures 4" x nearly 3" x almost 1 1/2" and has a natural shiny appearance.  A great conversation piece or use it wire wrap a new piece of jewelry.

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Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, are the four Crystalline varieties of Gypsum.  It is a very soft material composed of Calcium Sulfate.  Selenite is often transparent and colorless.  If color is present it is often due to impurities or presence of other minerals. 

selenite crystal

Selenite Crystal

$20.00 PR409c  This is a very pretty, above average quality, multi-colored Marble Vase from China.  This cool vase measures nearly 4 3/4" tall x 2 3/4" in diameter.  It is highly polished all around except for the base.  This vase has a very nice, softer Yellow background color with Brown, Green, Grey and White accents.

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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

$20.00 PR410b  This is a great find!!  Here is a nice piece of India Moss Agate.  It measures 3 1/8" x 2 1/4 " x over 1 5/8" and has a very nice polish. It has several sparkly cavities that add character to the appearance.  This awesome specimen makes a great decoration piece. Very cool!

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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.

jasper

India Moss Agate

$200.00 PR412b  This is a different item here at the Rock Shed!!  This is a very beautiful Orange Calcite Buffalo from Utah.  It measures nearly 9" x  6 1/2" x almost 1 3/4" with a very nice polish.  The Buffalo has a beautiful Orange color with lots of White accents starting from the top going down around the sides. A neat item indeed! 

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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.

orange calcite buffalo

Orange Calcite Buffalo

$24.00 PR402b  Here is something different at the Rock Shed.  This is an above average quality Agatized Coral specimen.  The Coral has been cut and the face highly polished. The Coral measures 5 1/8" x over 3" x over 1 1/8" and has a natural rough exterior.  The fossil shows unique detail and texture.  This Coral is from Florida and from a location that is no longer accessible to the public.

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coral

Coral

$20.00 PR408b  Here is something different from Mexico.  This is a very nice complete Trancas Geode and has been cracked down the middle to show the beautiful inside crystals.  It measures 2 3/8" x 2 1/4" x 2" when the pieces are together.  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.

geode

 Trancas Geode

$20.00 PR400c  This is a nice, above average Laguna Agate slab with great color and a very unique design.  It measures 2 3/8" x over 1 3/4" x nearly 3/16" 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

Laguna Agate End

$10.00 PR401c  Here is a great find.  This is a Rose Quartz pocket piece from Brazil.  Each piece measures approximately 2" in length  x 1" in width and has been polished all over.  Item is similar to photo.  You will receive one (1) pocket piece. These are really beautiful!

Rose Quartz is a type of Quartz which exhibits a pale pink to rose red hue.  The color is usually considered as due to trace amounts of Titanium, Iron or Manganese, in the massive material.  Some Rose Quartz contains microscopic Rutile needles which produce an asterism in transmitted light.

rose q

Rose Quartz

$40.00 PR413c  This is a really rare item.  This is a beautiful Dry Head Agate from Montana.  It has excellent banding colors around the quite small crystallized cavities.  The piece measures approximately 4 5/8" x nearly 4 5/8" x over 1 5/8" and has been polished on the face.  Very cool indeed!

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Dry Head Agates are from the Bighorn Canyon area of Montana. The banding colors are usually bright orange with some white or pink bands on charcoal, light gray, whitish oranges or greenish matrix. Dry Head Agates are very rare and no longer available as the mining area is now part of a wild horse refuge. Dry Head Agates may be geologically similar to the Teepee Canyon and Fairburn Agates of the Black Hills area.

agate

Dry Head Agate

$60.00 PR411c   Here is a very different item here at the Rock Shed. This is a larger, very pretty Petrified Wood Slab from Wiggin's Fork, Wyoming.  This gorgeous specimen measures approximately 7 1/2" x nearly 4 3/4" x nearly 3 1/2" and has been highly polished on one side to show the lovely crystallized, nearly clear, colors it is made of.  This piece was cut and polished in our own Lapidary department. A very unique and beautiful addition to any rock collection. 

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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

Wyoming Petrified Wood

$25.00 PR405b   Here is something different for any collector.  Here is a very nice, very unique Geode.  The exterior is much like a Candy Apple Geode but the inside is much different then most you will find.  The inside has off white colored crystals and remind me of a cave.  The Geode measures nearly 3 3/4" x 2 3/4" x 2 1/4" and has a natural unpolished appearance.  A great conversation piece!

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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

Geode

$40.00 PR406c   Here is something different from the gift department at the Rock Shed.  This is a very nice specimen of Youngite from Wyoming.  It measures 4 3/4" x 4 5/8" x over 2 1/2" and has a nice botryoidal quartz druzy finish on much of it.  The exposed Jasper varies in color from tan to reddish in other areas. The Youngite shows a pretty green under short wave UV light and purple under long wave as shown.  A perfect gift for that perfect person.

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Click here for more fluorescent rocks and minerals

Youngite is an Agatized Brecciated Jasper with a grayish translucent druzy quartz around the outside of the material. The druzy quartz usually fluoresces green. The Jasper center color varies from tan to peach, brown, reddish and salmon.  Youngite is used in making gemstone beads or cabochons and is very hard.

youngiteyoungiteyoungite

Wyoming Youngite

$60.00 PR415c   This is a gorgeous specimen of Petrified Wood from Madagascar.  This awesome piece is highly polished and measures 5 3/4" tall x nearly 8 1/8" x almost 2 1/4". It has a beautiful dark Brown color at the base accented by Orange and Cream as you up.  The polish brings out the wonderful character of the wood showing the true beauty.

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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

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