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Page 4
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Cost
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Item Description
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Click Picture
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$70.00 |
SP407c This gorgeous sphere is made out of Blue
Opal and is from China. It has a good array of other colors along with the
Blue iridescent areas in a interesting design. This sphere measures 3
1/8" in diameter and has a very nice polish. Something new and
unique to The Rock Shed. Another
photo
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Opal is a colorful mineral of hydrated form of Silica related to
Quartz. It's internal structure makes it diffract light, taking on many
colors depending on the conditions when it was formed. Those colors can
range from clear through white, red, orange, yellow, green, blue, purple,
rose, pink, brown and black. Opal varies in optical density from opaque to
semi-transparent. Opal is the national gemstone of Australia, a producer
of over 93% of the world's supply.
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Blue Opal Sphere
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$60.00 |
SP400c This is a high quality Rose Quartz sphere
from Madagascar. This sphere measures nearly 2 1/2" in diameter and
has a great high shine. This sphere is absolutely gorgeous with a good mix
of deep rose and lighter accents. It has an excellent 6 pointed asterism in bright sunlight. Very
beautiful!
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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.
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Rose Quartz Sphere
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$24.00 |
SP410b Here is an
interesting Mook Jasper Sphere.
This sphere has an mustard yellow color with darker earth toned accents. It measures
nearly 2" in diameter
with a nice polish. A good addition to any collection.
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Jasper is an opaque, impure variety of Quartz that is usually red,
yellow or brown in color. Jasper can appear as an opaque rock with shades
of red due to mineral impurities. Patterns can arise from the formation
process and flow patterns in the sediment or volcanic ash that was
saturated with silica which formed the banding or swirling designs in the
rock.
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Mook Jasper Sphere
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$85.00 |
SP404c Here is a nice large Onyx sphere. It
measures approximately 5 3/4" in diameter, weighs just over 11 pounds
and has a nice polish. This sphere has a good blend of color and
an interesting design. There is one fill spot, very common in this
material, but it does not detract from the sphere's beauty. Just
a nice sphere. Another photo
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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
is found in Mexico and Pakistan and is often carved and polished into
various items. This material is much more readily available and softer
than the gemstone commonly called Black Onyx which is a silica gem.
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Onyx Sphere
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$75.00 |
SP401c Here is a very nice
Ocean Jasper sphere from Madagascar. This sphere is a beautiful blend
of Green, White, Pink and Gold colors. It is a very pretty sphere with
a good polish. It measures over 2 1/2" in diameter and has many tiny crystal
cavities scattered about the sphere. A great addition to any collection!
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This material is a new find from Madagascar. The deposit formed as a rhyolite
flow but has been completely silicified. The Rhyolitic eyes or orbs come in
an astonishing array of colors and color combinations. The back ground can
be white, pink, green, red, or yellow. Botryoidal formations as well as white
and deep green druzy are also common. This deposit has been discovered at
the edge of the ocean. It can only be seen and collected at low tide. The
area has no road so the material must be transported to civilization by boat.
This material is fast becoming a rarity in the Jasper ocean fields, so get
one while it is still available.
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Ocean Jasper Sphere
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$70.00 |
SP405b
This is nice, multi-colored Chinese Picasso Marble sphere with a good polish.
It has an interesting pattern of light Green, Grey, Cream, Tan, and Black colors.
The sphere measures over 3" in diameter. Close observation will reveal
some fracture lines common in this material, it does not detract from the
stability of the sphere. A nice sphere for any price!
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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.
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Chinese Picasso Marble Sphere
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$100.00 |
SP406b
This is a gorgeous Agate sphere from Madagascar. This sphere
measures over 3 3/4" with a good polish. This sphere has a larger
natural cavity and a couple smaller ones as well. It has nice banding in a very
pretty design. This sphere is very beautiful and would
complete any collection.
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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, Fairburn or other.
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Agate Sphere
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$40.00 |
SP402c
This is a very pretty, beautifully colored Poly-Chrome Jasper sphere with
a very interesting pattern. It measures nearly 2 1/2" in diameter with a nice
polish. This nice sphere is from Madagascar.
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Jasper, also known as spotted stone, is an opaque, impure
variety of Quartz that is usually red, yellow or brown in color. The
mineral breaks with a smooth surface and is used for ornamentation or as a
gemstone. It can be highly polished and is used for vases, seals, and
other decorative items.
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Poly Chrome Jasper Sphere
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$28.00 |
SP428b
This is a nice Stromatolite sphere measuring 1 3/4" in diameter. It has a
nice polish as well as very good definition between the radiating lines of
the Stromatolite. Stromatolites (fossil algae) are one of the oldest
fossils dating back to nearly 800 million years in the Cambrian Period. This
material is from Peru. Another photo
Stromatolites are one of the oldest bacterial microfossils known.
The Peruvian Stromatolites are from the lower Proterozic period some 2.3 billion
years. They are from the Eastern Andes, Bolivia, South America.
Stromatolites are actually mounds of mud that have been preserved.
Very few will actually contain the fossilized microbes that built them.
They accumulate because blue- green algae produces a sticky film that catches
mud and silt, in turn forming layers. In time theses layer build up
to form mounds.
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Stromatolite Sphere
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$26.00 |
SP414c This is a
nice sphere made from Septarian nodule. It measures nearly 2" in diameter.
It has a large amount of beautiful Gold Calcite with plenty of dark Brown
Aragonite detail. This cool sphere would
be a great addition to any sphere or Septarian collection. This material
is from Madagascar.
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Click
Here to See More Septarian Specimens.
Septarian, also know as a type of Concretion, is a volume of sedimentary
rock in which a mineral cement fills the porosity. Concretions are often
ovoid or spherical in shape. They form within layers of sedimentary
strata that has already been deposited. It is composed of a Carbonate
mineral such as Calcite, a Silica such as Chert, Flint or Jasper or an Iron
Oxide such as Goethite or Hematite. It is commonly found in Shale, Siltstones
and Sandstones.
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Septarian Sphere
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$30.00 |
SP403c This is a
stunning sphere made from Amethyst. It measures nearly 2 1/8""
in diameter and has a nice polish. The sphere is a lighter purple color,
lots of sparkly inclusions with a beautiful design. A truly wonderful find.
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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 an
ornamental stone, but fine, clear specimens that are suitable for cutting
are used in jewelry. |
Amethyst Sphere
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$45.00 |
SP427b This is a very
unique sphere made from Mahogany Obsidian. It measures nearly 3 1/2" in diameter and has
a nice polish. The sphere has deep red color in an interesting
design on a black background. A truly wonderful find.
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Obsidian is a type of naturally-occurring glass formed as an extrusive
igneous rock. It is produced when felsic lava erupted from a volcano,
cools rapidly through the glass transition temperature and freezes without
sufficient time for Crystal growth. Because of the lack of Crystal structure,
Obsidian blade edges can reach almost molecular thinness, leading to its ancient
use of projectile points (arrow heads), and its modern use as surgical scalpel
blades.
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Mahogany Obsidian
Sphere
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$32.00 |
SP411c This is a very
nice Marble sphere with a very unique design. It measures
nearly 3 3/4"
in diameter and has a nice polish. The sphere has an interesting design
and great Yellow, Cream and Grey tone color scheme. Grab it quick before it is gone.
Another photo
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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.
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Marble
Sphere
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$250.00 |
SP415b Here is a
very nice Brazilian Agate sphere. The sphere is nearly 5" in
diameter. Be sure to look at all the pictures of the different
views, there is some small areas where there appears to be some dye that
has seeped onto the rock. Our price reflects these flaws. Overall a pretty
sphere to add to the collection.
Another photo
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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 an ornamental stone, but fine, clear specimens that are suitable for cutting
are used in jewelry.
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Brazilian Agate Sphere
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