Petrified Wood, Geodes, Crystals, Agates and Carvings

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Cost

Item Description

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$25.00

PR101b  Here is a very nice, real interesting Chalcedony specimen.  This beauty measures 5 1/2" x 5" x 1 1/2" and is highly polished on the cut side.  This material is from South Dakota.  This mineral is very unique in that it resembles a fossilized sponge due to the interior and exterior formations.  Something very different for the polished rock collector.

Chalcedony is a cryptocrystalline form of Silica which is 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.  Chalcedony is also known in a variety of forms including Agate, Onyx, Carnelian, Chrysoprase and Heliotrope.

chalcedony

Chalcedony

$18.00 PR100b  This is something different for the polished rock collector.  Here is a larger, polished end cut from a specimen of Brazilian Agate.  It measures 2 5/8" x 5 5/8" 2 1/4" and is polished on one side.  This piece has a nice unique shape and really great design. 

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.

end

Brazilian Agate End

$27.00 PR112c  Here is a very nice, above average quality Amethyst Crystal Point.  It measures 2" x 2 1/4" x 2 1/2" and has a good polish on all facets.  The Crystal has a deep, rich Purple color with a translucent appearance.  The point is in excellent condition and has no damage.  A super gift for that super person.

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 Point

$22.00 PR106c  This is an extraordinary find.  Here is a very nice, above average quality Fossil Rock Plate.  It measures 6" in diameter and has a nice polish.  This plate has a wonderful display of several different types of fossils at almost every angle.  A very nice gift for the hard-to-buy-for person.  Item will be similar to like item.

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.  This type of Marble will often have small animal like creature fossils throughout the matrix or media.

fossil rock plate

Fossil Rock Plate

$30.00 PR111c  Here is something different from the Rock Shed gift department.  This is a very nice, above average quality Aqua Aura Crystal.  It measures 1 1/4" x 1 1/4" x 1/2" and has a nice sparkly appearance with a beautiful Blue color.  Just amazing. 

Aqua Aura is a term used to describe a natural Crystal that has been coated with Gold fumes.  It is created in a vacuum chamber from Quartz Crystals and Gold vapor by a process known as vapor deposition.  The Gold atoms fuse to the Crystal's surface which gives the Crystal an iridescent metallic sheen.

aqua aura

Aqua Aura Quartz

$25.00 PR108c  Here is a great addition to your office or home.  This is a Arizona Rhyolite Free Form Stand-Up.  It measures 9 1/2" x 5" x 3 1/4" and has a rough, natural texture.  This piece is not polished.  Something very different for the collector or the gift giver. 

Rhyolite is an igneous, volcanic rock that is composed of Felsic, or Silicate minerals such as Silica, Aluminum, Sodium and Potassium.  The material is similar to that of Granite, Pumice and Obsidian but due to the cooling process when formed, Rhyolite did not form any crystals, thus changing the texture of the material.

stand up

Rhyolite Freeform

$60.00

PR102b   Here is a great deal on bowls from the Rock Shed.  This is a 4 piece set of Fossil Rock Marble Bowls.  This material is from Pakistan.  Each bowl measures 5" in diameter and 1 1/2" in depth.  Each has its own unique design with a soft Creamy Beige color with shaded Gray fossil-like accents.  The Bowls are polished on the front and back.  We do advised hand washing only due to the delicate material.  Please note, each bowl in the set is different and will be randomly selected.

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.

bowls

Fossil Rock Bowl Set

$20.00

PR103b  Here is something different for the mineral collector.  This is a section of a larger Druzy Crystal Quartz Geode from Morocco.  This specimen measures 5 3/4" x 2 3/8" x 3/4" and has a nice sparkly appearance.

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.

crystal

Quartz Geode

$9.00 PR105b  Here is a very cute, mini Serpentine bowl.  It measures 2 1/4" x 1" and has a nice, all-over polish.  These adorable bowls are perfect for coins, jewelry or as a decorator item.  The photo shows the top and bottom for viewing purposes only.  You will receive one bowl similar to the picture.

Serpentine is a group of common rock forming hydrous Magnesium Iron Silicate minerals.  It can contain minor amounts of Chromium, Manganese, Cobalt or Nickel.  Serpentine may refer to over 20 different varieties that belong to the Serpentine group and the most common are Antigorite, Chrysotile and Lizardite.  The color is often green and may have a mottled or scaly appearance.

serpentine

Serpentine Bowl

$10.00

PR107c  Here is a very nice, unique Pakistani Onyx hand crafted bowl.  It measure 3" 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

Onyx Bowl

$15.00

PR110b  Here is a darker Purple Cactus Crystal cluster. It measures 2" x 1 1/2" x 1 1/4" and has a nice shiny appearance.  This Cactus Crystal has several sparkly crystals with accents of Citrine undertones. These Crystals are from the Magaliesberg Mountains, west of Pretoria in South Africa.  Something different for the mineral collection.

These Crystals are often slender Crystal cores with Amethyst tips and are coated with orange Hematite stained mini Crystals giving the bristly, cactus appearance.  Sometimes they may have a druzy veil in lavender or yellow or white.  Each in unique in their own right and can not be duplicated.

cactus crystal

Cactus Quartz Crystal

$9.00 PR104c  Here is a set of 5 very beautiful, larger Brazilian Agate slabs in natural of Browns, Grays and Whites and color-enhanced colors including Blue, Green, Teal, Pink and shaded and/or striped varieties of these colors.  These 1/8" thick slabs come in various sizes from 2" to 5 1/2" and are polished on both sides.  These will be sold in sets of 5 slabs as they come from the box.  The photo is a small representative of the colors and patterns on hand. 

slabs

Brazilian Agate Slab Set

$40.00 PR109b  This is a very nice, above average quality Black and White Marble vase from Pakistan.  This vase measures 7 3/4" x 3" and 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

Black Marble Vase

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The Rock Shed
515 1st Street
Keystone, SD  57751

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

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