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Granite |
People often confuse granite with marble
and vice versa, but these stones are different materials
geologically. Granite is much older and harder than marble
and is actually igneous rock formed mainly of feldspar
and quartz, usually with traces of mica or hornblende. |
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Granite can be highly polished to expose
all of its natural characteristics, honed for a matt
finish or flame-textured for an aged, antique finish.
These finishes are sometimes combined to produce interesting
patterns and features.
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Granite is tremendously popular for
its aesthetic looks and its hardwearing, almost maintenance-free
qualities. Which are used for kitchen Counter tops and
Vanity tops.
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Granite Thumbnails |
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Marble |
Marble has been used for centuries
as a structural and decorative building material and the
many famous buildings that still exist today, such as
the Colosseum and Pantheon in Rome, are a fitting tribute
to the skilled craftsmen of the day and the tremendous
durability of marble itself. |
Marble was created through a metamorphosis
involving heat and pressure and its' most common characteristic
is calcium carbonate. It is normally white, but often
tinted by iron oxide, carbon and serpentine to form attractive
shades of yellow, brown, green or black. Other minerals
may grow from impurities within the stone often resulting
in coloured streaks or veins. Marble is usually finely
crystalline, hard and dense and consequently can be highly
polished. |
Marble is usually
highly polished to highlight its' wonderful natural characteristics.
However, it is also available in a matt (honed) finish
or an aged (antiqued) finish for a more traditional look.
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Marble Thumbnails |
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Slate |
Slate can be described very simply
as a sedimentary mud rock, compressed and compacted over
time and altered by metamorphism (a combination of heat
and pressure) to form a very hard rock with well defined
cleavage lines. These cleavage lines enable the slate
to be easily "split" or "cleft" which
gives slate its' characteristic appearance. Slates can
vary in colour depending on the different minerals that
were introduced during their metamorphosis. Bright colours
such as greens, reds, yellows and purples can be found,
as well as the more common greys and blacks. |
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Slate is generally harder than other
sedimentary rocks like Limestone and Sandstone and is
available in a matt, eggshell finish as well as the
better-known riven, cleft finish.
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Slate Thumbnails |
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Travertine |
Travertine is a kind of sedimentary
stone that is common in Italy. Like marble, travertine
is a form of limestone When limestone is put under a lot
of pressure for a long time (thousands of years), it can
turn into travertine, the way peat turns into coal. If
the travertine is left under pressure for thousands more
years, it can turn into marble, the way coal can turn
into diamonds. |
Most travertine is white or cream colored.
It consists mainly of calcium carbonate. It forms when
calcium carbonate separates from water through evaporation.
Travertine is often used as decorative building stone
because it is easy to cut. |
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Travertine occurs in areas where limestone
is common and where circulating ground water contains
calcium carbonate. It often forms around the mouths
of hot springs and in streams. Rock formations called
stalactites and stalagmites, which are found in caves,
consist primarily of travertine. So travertine is a
kind of stone that is about halfway in between limestone
and marble. It's finer than limestone, but not as fine
as marble.
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Travertine Thumbnails |
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Limestone |
Limestone is very popular as a decorative
finish for many reasons, most importantly its appearance.
Most limestones are generally pale and light in colour,
which makes them subtle and easy to blend into any colour
scheme. Many people also prefer limestones matt, eggshell
finish to the highly polished look of Marble, Granite
or Composite Stone. |
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Limestone and Marble can be similar
in appearance, which sometimes results in confusion
between the two. This usually occurs when a limestone
is particularly hard and can be highly polished, like
Marble. Generally though, most limestones cannot take
a high gloss polish, hence their matt finish.
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Limestone Thumbnails |
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Sandstone |
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Sandstone is very often called York
Stone and vice versa. Although the popular, yellow York
Stone is indeed sandstone, it is not the only type.
Other colours such as reds, pinks, beiges, creams, blues
and browns are also available.
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Sandstone is a sedimentary rock formed
over millions of years from fine grains of sand glued
together by minerals of natural cement. It is the composition
of this "cement" which determines the colour
and hardness of each sandstone. Some of the harder sandstones
are rich in quartz and feldspar, two minerals that are
also commonly found in granite. |
Sandstone is used in situations where
a colourful, durable, non-slip, low maintenance surface
is required. Popular examples include flooring and wall
cladding, landscape features like patios, terraces, balconies
and paths and both internal and external swimming pool
surrounds. |
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Sandstone Thumbnails |
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