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Scientific


What is Onyx?

What is Marble?

What is Travertine?

What is Granite?

What is Limestone?


What is Onyx?
Onyx, like travertine, is the result of water dissolving existing limestone and re-depositing it as a new kind of stone, sometimes called sinter. In limestone caves, onyx is formed by drip water, as stalagmites and stalactites.

Colors

Onyx has many different color shads such as white, smoked, honey, orange, brown and green.

Specifications

Onyx is a very soft stone, and somewhat brittle, and needs to be installed where it will not be subject to hard wear. This beautiful stone is characterized by its translucence, and can actually be backlit for striking, dramatic effects.
Variety of cryptocrystalline quartz, differing from agate only in that the bands of which it is composed are parallel and regular. Its appearance is most striking when the bands are of sharply contrasting colors; black and white specimens are often used for cameos.

Iranian onyx

Iran has large deposits of Onyx in many different shades of green, white, honey, and orange and smoked which are available in a number of different tile sizes, blocks and slab thicknesses.


What is Marble?
Marble is a rock widely used in buildings, monuments, and sculptures. It consists chiefly of calcite or dolomite, or a combination of these carbonate minerals. Most marble of commercial value was formed in the Paleozoic Era or earlier in Precambrian Time. Although marble comes from limestone, the temperatures and pressures necessary to form marble usually destroy any fossils that may have been present in the limestone.

Colors

Marble has the advantage over other stones of its wide color range, from whites to blacks and including pinks, greens, reds and beige shades. When polished, its true beauty comes to light showing the veining and coloring. The minerals that result from impurities give marble a wide variety of colors. The purest calcite marble is white. Marble containing hematite has a reddish color. Marble that has limonite is yellow, and marble with serpentine is green.

Specifications

Marble does not split easily into sheets of equal size and must be mined carefully. The rock may shatter if explosives are used. Blocks of marble are mined with channeling machines, which cut grooves and holes in the rock. Miners outline a block of marble with rows of grooves and holes. They then drive wedges into the openings and separate the block from the surrounding rock. The blocks are cut with saws to the desired shape and size. Marble has long been highly valued for its beauty, strength, and resistance to fire and erosion. The ancient Greeks used marble in many buildings and statues. Large blocks of colored marble are used for columns, floors, and other parts of buildings. Crushed or ground marble is also used in paving roads and in manufacturing roofing materials and soil treatment products. Marble is also ideal for use in domestic housing for such purposes as hall floors, bathroom walls, kitchen worktops, hearths and fireplace surrounds.

Iranian Marble

Marble is found in many countries, including Iran, Taiwan, Belgium, France, Great Britain, Greece, India, Italy, and Spain. South American nations also have large marble deposits. In Iran produces Fars province the most marble. Other chief marble-producing provinces include: Yazd province, Kerman province and Kermanshah province.


What is Travertine?
Travertine is the result of evaporation of mineral water around hot springs or geysers.  Water, seeping upward through limestone layers in the earth, picks up traced minerals and dissolved limestone (calcium carbonate or CaCO3).  The hot springs deposit the mineral water into pools or streams where the concentration of the calcium carbonate increases through evaporation. Over thousands of years the deposited layers can accumulate. In other words, Travertine is limestone that has been formed over a long period of time.

Colors

Travertine comes in several shades of white, crème/beige, brown, pink and gold, red and is available in a number of different tile sizes and slab thicknesses.

Specifications

Travertine is porous with many visible holes. The holes and cavities may be filled.
It can be filled, usually with cementicous filler, or left unfilled for a more rustic appearance. It is normally used for flooring, wall cladding, vanity tops, fireplace surrounds and furniture.

Travertine's beauty comes from the movement of tones that gives a hint to the slow evaporation process that made the stone.  There will not be any fossil shells in travertine as seen in limestone. Travertine can be cut on either a "vein" cut, which is against the bedding which reveals the bedding planes, or a "crosscut" cut, which is along the bedding plane and reveals a flowery, often circular pattern.

Iranian Travertine

Iran, Italy and Mexico have large deposits of Travertine. In Iran there are large deposits of Travertine in White, Light Beige, Beige, Dark Beige, Brown (Noce), Yellow, Pink and Red color which are scattered all over the country.


What is Granite?
Granite is—quite literally—as old as the earth. It is formed from liquid magma, the molten rock still found at the core of the planet, cooled slowly to form a substance approaching the hardness and durability of diamond.
The most common granite is quarried from - Iran, Canada, South Dakota, Wisconsin, South Africa and India. There are also quarries located in Finland, China and the Ukraine.

Colors

Granite comes in several shades of green, black, white, crème/beige, brown, pink , gold and red.

Specifications

Granite is an igneous rock, the name reflecting its fiery beginnings. The chemical composition of granite is similar to that of lava. However, granite owes its hardness and density to the fact that it has been solidified deep within the earth, under extreme pressure. Over the eons, seismic activity has changed the crust of the planet, forcing veins of granite to the surface. Glaciers scraped off layers of dirt, sand and rock to expose granite formations. Typically revealed by outcrops, the deposits have been discovered on all the continents.
Granite is a coarse, medium or fine grained intrusive igneous rock which is rich in quartz and feldspar. It is the most common plutonic rock of the Earth’s crust, which was formed by the cooling of silica melt at depth and is found throughout the world.
There are only 2 substances harder than granite, and they are diamond and carbide. Only 15% of all granite quarried is of a quality grade good enough to be used for monuments, all other granite is used in building facial, floor tile, countertops, tables, curbs and other products.

Iranian Granite

The most common granite is quarried from - Iran, Canada, South Dakota, Wisconsin, South Africa and India. There are also quarries located in Finland, China and the Ukraine.

Iran has large deposits of granite in many different shades of green, black, white, pink, brown, crème/beige, gold and red which are available in a number of different tile sizes, blocks and slab thicknesses.


What is Limestone?
Limestone can be thought of as the sea bed of pre-historic water mass. Over millions of years soft sediment was deposited and compressed by the water pressure above it. A chemical process also took place turning the sediment into limestone - mostly calcium or magnesium carbonate. As the water levels have dropped, it is now relatively easy to quarry the limestone (especially compared with granite, which is much harder).

Colors


Limestone comes in a number of different shades. Most are a creamy off-white, but some are dark grey, silver-blue, orange or almost pure white.

Specifications

Limestones from different regions have unique characteristics. Some reveal distinctive shells, some are more monochrome, others display patterns of sediment. The harder the limestone, the more it will take a high polish and some have a very low porosity. At Stone Interiors, we enjoy working with limestone in a bathroom environment and can often carve solid blocks into sinks, shower trays or even baths.
Iranian Limestone

Iranian Limestone

There are four common limestone color shades in Iran. Light beige, Beige, Brown and Pink limestone quarries scattered in some western areas of Iran. You can find the limestone pictures in our photo gallery.


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