Petrified Wood, Geodes, Crystals, Agates and Carvings

Page 7

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$25.00 PR708c   Here is a very nice, above average quality Arizona Petrified Wood End.  It measures 6" x 4" x 2 3/4" and is nicely polished on the front face.  This Wood specimen has good color and design.  It has been cut and polished in the Rock Shed's own Lapidary department.  A super great gift.

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

Arizona Petrified Wood

$18.00 PR709b   Here is something different for the polished rock collector.  This is a smaller, very nicely polished Carnelian Agate pocket piece.  It measures 2" x 1 1/4" x 3/4" and has a super smooth finish.  This Agate has a good blend of Orange color and a very unique design.

Another photo.

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

Carnelian Agate

$22.00 PR702b   This is a very nice Brazilian Agate end cut.   It measures approximately 3 1/2" x  6" x 1 1/2" and is polished on the cut side.  This Agate has a nice, natural interior which exhibits a beautiful center with a Tan and Cream colored Agate design with just a hint of Lavender. A nice display piece for your collection.  Very beautiful.

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

Brazilian Agate End

$125.00 PR710c   This is a polished End from an Utah Septarian Nodule.  It measures 8 1/4" x 8" x 3". This one has lots of Brown Aragonite with contrasting Yellow Calcite.  This beauty was cut and polished in the Rock Shed's own lapidary department.  Septarian nodules are rather difficult to find now, so grab this one while you have the chance.

Septarians are commonly composed of a carbonate mineral such as Calcite, a microcrystalline form of Silica as in Flint or Jasper, or an Iron Oxide such as Hematite.  These specimens are also known as a concretion which is a type of sedimentary rock. 

Septarians were formed millions of years ago by sediment forming around a fossil to create a mud ball transforming the fossil into Calcite and Aragonite.

septarian end

Septarian End

$20.00 PR711b  Here is something different from the gift department at the Rock Shed.  This is a larger, hand crafted Soapstone Box with inlaid Abalone shell design.  It measures 6" x 4 1/2" x 1 1/2" and has a smooth finish.  The box has a removable lid with an intricate hand carved floral design on each side.  The inlay Abalone shell design has a pretty Pink and Blue floral pattern.  A perfect gift for that perfect person.

Soapstone, also known as Steatite or Soaprock, is a metamorphic rock or Talc-Schist.  It is composed of the mineral Talc and is rich in Magnesium and is formed by the metamorphism of ultramafic protoliths and the metasomatism of siliceous Dolostones.  It is a very soft material and may have a soapy feel when touched.  It can be easily carved into decorative items as well as bowls or other cooking utensils.  It is used by welders and fabricators as a marker due to its resistance to heat.

soapstone box

Soapstone Box

$65.00 PR707c   Here is something different from the gift shop at the Rock Shed.  This is a very nice, above average quality Amethyst Geode half.  It measures 5 1/4" x 6" x 3" with a natural, rough texture on the outside.  The inside reveals very nice Purple and White Crystals.  Very beautiful indeed.

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

amethyst

Amethyst Geode

$85.00

PR705b  Here is a very beautiful Selenite Free Form resting in a wooden base.  The Selenite measures 6" x 6 3/4" x 1 1/2" and has a natural shine and finish.  This lovely specimen has a translucent appearance and is almost totally clear.  It has an unique shape and design.  A great addition to any collection or a super gift.

Another photo.

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. 

freeform

Selenite Free Form

$25.00 PR704c  Here is something different for the polished rock collector.  This is a very nice, above average quality Dry Head Agate End.  It measures 6 3/4" x 5 1/2" x 2" with a nice front face polish.  This Agate has a very nice design and beautiful blend of Earth tone color. 

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

Dry Head Agate End

$32.00 PR75c  This is a very unique, very colorful Hodge Podge Marble Obelisk from Utah.  It measures 6" x 1 1/2".  This Obelisk has a beautiful range of colors which incorporate a very cool design.  It is polished on all sides.  A very different, very neat gift for the hard to buy for person.

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 or Chert.

obelisk

Hodge Podge Marble Obelisk
 

$15.00
 

PR700b  This is a very nice, color-enhanced Teal Blue Brazilian Agate Stand Up.   It measures 2 3/4" x 3 1/2" x 1" and is polished on the front face.  The is pretty creation has a dark Teal color with a striped design that is hard to view in the photo.  There is a smaller Crystal-druzy cavity in the center which only adds to the beauty.

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 stand up

Brazilian Agate Stand Up

$16.00
 

PR706c  Here is a very nice, unique Pakistani Onyx hand crafted bowl.  It measure 5" in diameter and 1 1/4" in depth with a nice polish on all sides of the bowl.  Each bowl is different and has its own beautiful design and color scheme.  Although the photo shows 3 bowls, you will received one (1) of our choice as it comes from the box.

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. 

bowl

Pakistani Onyx Bowl

$32.00
 
PR703b  Here is something different for the polished rock or mineral collector.  This is an above average quality polished specimen of beautiful Blue Lapis.  It measures 1 1/2" x 3" x 2" and is highly polished on all sides.  This stand up has a light Blue color with many areas of sparkly Pyrite and Grey to White Quartz.

Another photo.

Lapis is a stone with a long tradition of being considered a gem.  It is usually deep blue in color and is opaque.  It is a rock and not a mineral as it is made up from various other minerals.  The main component is Lazurite which is a Feldspar Silicate.  Lapis may also contain Calcite, Sodalite and Pyrite.  It is found worldwide.

lapis

   Lapis Stand Up

$26.00
 
PR701c  This is a very pretty, above average quality, multi-colored Onyx Vase from Pakistan.  This Vase measures 3 3/4" x 4".  It is highly polished all around except for the base.  It makes for a very interesting display piece or would make a nice gift.

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 or Chert.

Another photo.

vase

Pakistani Onyx Vase

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