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Natural
stone is a dynamic material, which exhibits
tremendous variance of its core natural characteristics;
the palette of colors and diversity of textures
is extensive. Distinctive luster of the natural
stone communicate elegance and quality that
cannot be imitated by any other substance.
The composition of natural stone is extremely
complex on a chemical and physical basis.
There are immense variations in the properties
of density, absorption and resilience. These
factors have a tremendous impact on the necessity
for specialized maintenance to protect and
preserve the value and elegance of stone.
In the last 20 years, there has been a revolution
in the stone industry worldwide. Natural and
composite stone products are the media of
choice when building a new home or re-modeling
an old one. Kitchen and bathroom floors,
walls and counters are completed with stone
applications, as well as other areas of the
home.
Natural stone is as old as the earth itself.
There is a certain magic about stone that
can not be reproduced by any other material.
Natural stone comes from all over the world:
Italy, Greece, Turkey, Spain, United States,
France, Brazil, Mexico, and China. It is amazing
to consider that in the past two years, over
forty continents have produced more than 102,000
tons of Travertine, 180,000 tons of Marble,
and 380,000 tons of Granite! There are more
than twenty-thousand types of different stones.
It would be impossible to list every type
available but there are some common characteristics
that can be identified. There are three basic
geological types:
1. Igneous Rocks (Granite) are mainly formed
through molten magma. As magma is cools and
condenses, it crystallizes forming the variety
of colors and patterns.
2. Metamorphic Rock (Marble) which is formed
of calcium carbonate minerals. Over time,
pressure and movement, it crystallizes forming
the range of color, variety and texture.
3. Sedimentary Rocks (Limestone): This type
of stone is a collection of bottom rocks,
fossils, sand and silt. They were banded through
time from the heavy pressure of the stone
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MARBLE
Marble is defined as any limestone
that will take a polish. Limestones
and therefore marbles are composed
of minerals of calcite or dolomite.
Colored marbles are the result of
other minerals mixed with calcite
or dolomite.
Marble has many common characteristics.
No matter what color, marble will
usually have some type of veining
running through it. The veins are
usually different in color than the
main color of the stone. There are,
however, exceptions to the rule. Some
marbles such as Thassos will have
little or no veining. Marble is relatively
soft when compared to other stones
such as granite. It will scratch very
easily. Marble is also very sensitive
to acidic chemicals. Vinegar is acidic
and will leave a dull spot on marble.
Avoid the following acidic materials
from coming in contact with your marble:
Vinegar, lemon, tomato and tomato
sauce, bleach, coffee, urine, vomit,
tile cleaners, X-14, toilet bowl cleaners,
and cleaners with lemon.
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GRANITE
Like marble, granite is also a natural
stone with many colors. However, the
similarities stop here. Unlike marble,
granite is composed of different materials
with different properties. Granite
is chiefly composed of 30% Quartz
and 60% Feldspar. These minerals are
much harder than the calcite of marbles
and for this reason granite will not
scratch as easily as marble. Granite
is very resistant to most acids and
will not etch nor leave a dull spot
on the surface, as marble does. Hydrofluoric
acids, however, found in products
such as rust removers, will mar the
surface of Granite. Granite contains
crystals, which are very distinct,
appearing like small to medium stones
compacted together. There are some
exceptions, such as Blue Azul will
have a vein like pattern, but if you
look closely, the vein will also have
small distinct crystals.
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LIMESTONE
Limestones are made of calcite from
shells, coral and other debris. They
are known as sedimentary rocks, because
they are formed by the breakdown. of
other rocks, shells, etc. Limestones
are usually loosely held together
and may differ in porosity from marble.
The course grain of some limestones
give it excellent durability. Limestone
can have numerous fossil impressions
that are well preserved. If a piece
of stone has various shell or animal
like impressions in it, there is a
good chance it is limestone. To identify
limestone, look for fossil like impressions
and loose grain structure. Limestone
comes in various colors but most are
shades of brown or tan, some leaning
towards gray and red. All shades seem
to fall into the earth tone color
range. Limestone is becoming increasingly
popular in the West and Southwest.
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TRAVERTINE
Travertine is a type of limestone
but differs in that it formed in a
hot springs called karst. The water
movement in this karst erodes the
travertine creating holes in the stone.
Polished travertine will usually have
these holes filled with colored cement.
These fillers typically are not polished
and will give the travertine a blotchy
appearance. Unfilled travertine will
exhibit these holes and are commonly
found on walls, floors, and building
exteriors. Travertine is commonly
found in tans and beige colors but
can also be found in silver and reds.
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SLATE
Slate is commonly gray in color, although
you may find green, yellow, and red
hues. It is a material from metamorphosed
state. That is, it consists of clay
like materials that have undergone
change under heat and pressure. Slate
can be recognized by its sheet-like
structure. The material is usually
thin, and if broken, will flake off
into sheets. Slate rarely is highly
reflective, unless a coating is placed
on top of it. Its surface is usually
uneven, unless machine sanded. Slate
is also prone to detonation around
water areas.
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SERPENTINE
Is a trade term that encompasses all
green marbles? The names stems from
the “serpent like bands”
of greenish color occurring in massive
varieties. Color ranges from a blackish
green to a leek green; highly variegated
to mottled in appearance. Some exhibit
yellowish and brownish colorations.
Serpentine has been classified as
a “Marble” due to its
capacity to take on a polished finish
in varying degrees. Some green marbles
are more moisture sensitive than others.
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SANDSTONE
/ FLAGSTONE / CAMERON STONE / THREE
RIVERS
All of these stones are relatively
consistent in age, mineral composition
and geological structure. They can
range in colors from tans, rose beige
yellows and reds. Similar textures
as a slate however containing siliceous
which gives the stone a slightly sharper
feel. These stone are ideal for exterior
applications especially around swimming
pools, patios and gardens. They can
be cut square for geometrical applications
or commonly used in broken random
pattern. Sealing is recommended every
year or two.
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QUARTZITE
Is distinguished by its natural high
quality sparkling appearances, and
its shifting aesthetics as the light
reflects from the variety of its mineral
patterned surfaces. A variety of colors
are available; very light white to
silver, medium to dark grays, light
to dark gold’s, soft greens
to olive green, and a variety of blues.
Quartz will weather well, but is highly
absorbent. If used where oils from
food will be present, it should be
professionally treated with oil and
water repellent.
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CERAMIC
& PORCELAIN TILE & GROUT
These tiles are an excellent alternative
for the value-oriented buyer. Ceramic
tiles are hard, brittle, heat-resistant
products that are manufactured by
firing clay and other materials. Porcelain
tile is a type of tile which generates
a translucent effect. And though it’s
a man made product it to require penetrating
sealer due to its slight porous nature.
The patterns of these products attempt
to emulate the look of natural stone
products. Typically, the cost is less
expensive and the color range is consistent
and predictable due to the man-made
nature of the product. Grout. It doesn’t
matter what you do Grout gets dirty!
Grout lines are like miniature gutters
running through you floors, showers
and counter tops. We recommend using
a penetrating sealer regularly of
even better selecting an epoxy based
grout prior to your installation.
One option which is practiced in Europe
to resolve dirty grout on stone floors
is to apply excess grout followed
by grinding and finishing stone to
where the grout and stone are completely
flush giving the floor almost a seamless
look. The grout and stone is easily
cleaned by damp moping.
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SPANISH
& ANTIQUE PAVERS / TERRACOTTA TILES
Terracotta, from the Italian “terra”
(earth) and “cotta” (cooked)
means just that...cooked earth! Terracotta
refers to any bisque, pot, paver, etc.
that is made out of natural clay and
is fired in a kiln. Today, the most
commonly used clay pavers in the United
States come from Mexico. Other clay
pavers that are sometimes used are antique
pavers otherwise known as reclaimed
pavers. Most of these reclaimed terracotta
pavers come from Italy and France although
they can sometimes be acquired from
the UK and Latin America. Those choosing
to use reclaimed pavers typically seek
the old world charm that accompanies
them. They are usually worn and have
a more rustic feel to them. |
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