Marble is a Glittering Stone

 

Marble is a Glittering Stone

By Frederick M. Hueston, StoneForensics.com

 

Marble’s name speaks for itself (marmaros, Gr. – glittering stone). During several thousand years it has preserved the right to be considered a decoration material, shiny in every way. Artists noticed that it is a unique material for sculpture as long ago as ancient times. The Venus of Milo, Parthenon, Zeus of Olympus temple, columns of Artemis temple in Ephesus, one of the Seven Wonders of the World, were created of soft white marble.

Owing to moderate hardness, this stone is polished perfectly well, and gives soft glitter coming from the inside. Under the rays of light penetrating into the stone, marble comes to life – light shining aureole appears around it. It glitters with pink, yellow, grey, blue, greenish, reddish, brown, black tones and amazes with their various combinations. Colored marble usually has many “stone veins”, which are splits filled with natural admixtures. On the shears of Verona, Fossile Marrone, Jura, Rosso marble, an attentive eye will distinguish shapes of ancient shellfish, corals, petrified algae, shells. Some types of marble having quartz and pyrite admixtures glitter with crystal and golden tinges.

Variety in texture and color (from deep black to milkwhite, which, by the way, was worshipped by Michelangelo) allows to make the brightest ideas come true. Subject to chosen colors, the “stone” interior can be warm or cold, massive or airy, luxurious or simple, dark or light.

Marble processing.
Most of the stone working companies produce marble flag of standard size: 300 x 300, 305 x 305, 400 x 400, 600 x 300 mm. Thickness varies from 10-20mm and more, subject to purpose. Considering tile texture, there are not too many ways of marble surface treatment: polishing, grinding, bush-hammering, artificial ageing.

Polishing and grinding emphasize the natural beauty of the stone. Bush-hammering adds useful antiskid lines to the material. “Antique” becomes more and more popular being preferred by lovers of the antique in general and interior antique stylization. It is believed that the natural ageing imitation (artificial weathering) creates a special atmosphere of softness and warmness. Weathered marble is widely used for floor tiling in modern restaurants and saloons: with its help the designers try to add an air of authenticity to the interior. Artificially imitating this natural phenomenon one can get different degrees of ageing. This effect is achieved through special surface treatment technology, which may include mechanical (including manual) and chemical influence. For example, for producing tabletops, wall and floor decoration, stone mosaics is often used. It is put into a special barrel where stones rub themselves against one another acquiring rounded shapes.

Marble application.
This decoration material is applied for inner and outer decoration. Floors, walls, staircases, fireplaces, columns, tabletops, kitchen worktops, lamps, decorated with marble always look wonderful.

Marble properties.
Marble is lasting, firm, weather-resistant. Nevertheless, with all its firmness it remains a soft absorbing material. As is known, marble and shale are carbonate sediments that are vulnerable to acid, coloring agents, thermal impact. Marble surface should be protected from thermal impact – a cup of hot tee or coffee may turn out fatal for a tabletop. It is possible to make stairs or floor surface of marble, but one should prevent a possibility of dropping of such abrasive particles as sand on a marble surface, as they will scratch the stone.

Choosing a marble for wet premises one should remember that a long-during contact with water changes marble’s color. The reason of it is oxidation of ferruginous mineral admixtures. Nevertheless, this material is more preferable for bathrooms than granite, as its structure is more porous, which provides better binding.

It is important to make the right choice of binder material for marble laying. Using cement grout or adhesive leads in some period to appearance of irremovable spots on the marble surface – absorbed saline and coloring additives. That is why it is recommended to apply special adhesive solution and plaster. If you take into account these nuances and pay attention to them in future, then not only you, but also your children and grandchildren will be able to admire the stone beauty.

Marble treatment.
As to operations characteristics, marble is practically eternal. However, it needs care and protection from aggressive environment – dust, water, salt, sand and acid. Thereto special agents are used: reinforcers, polishes, stone impregnations, cleaning solutions, mastic and even beeswax.

It concerns first of all polished floors. The main enemy of the polished surface is dirt, that is why it is necessary to take care of multistage protection system and regular surface cleaning. Wax protection coating improves decorative appearance of the stone, protects it and allows to wash the stone surface with water. For unprotected stone floors there also exist special substances that clean the dirt and at the same time create a protective film. Besides that, compositions reducing sliding even on the wet stone surface have been developed.

If stone faults are so strong, that wax preparations do not help anymore radical agents are applied – grinding with subsequent polishing. Stone surface regrinding and repolishing is carried out with the help of special equipment. Consequently the stone gains original appearance.

Prices for marble.
The times, when only rich could afford decorating their houses with marble, have gone. Technical producing and treatment methods have reduced the cost price and the marble has turned from object of luxury to one of the available goods.

The main suppliers of the “glittering stone” are Italy, Greece, Turkey. China has recently become another active marble supplier. The stone quality does not depend on the place of origin. Environment, producing and treatment technology are much more important. On the other hand, origin influences its price as it includes value of labor, custom duties and transporting costs.

When buying marble facing slabs, it is necessary to pay attention to size and quality of the surface. For slabs with polished and grinded first-class surface finish visible faults are unacceptable. The second class may have some defects: not more than two or three small defects of the corners and chips on the edges. Colored first and second class marble intended for inner decoration may have one non-through crack of tectonic origin.

It is necessary to take into account the existence of difficult for color selection marble and practically homogeneous stones. Difference in slab color is a distinctive feature of natural material. That is why the buyer should specify the level of possible color divergence beforehand and check the maximum quantity of specimen.

Standard polished ten millimeter facing slab costs from 8 to 40 pounds per m2. The main influential parameters are originality, shape, color, firmness, type of treatment. Unique stone may excel the base line in price considerably. An increase in slab thickness advances the price greatly.

Marble is a noble material: right selection, competent laying, follow-through experts’ recommendations will return a hundredfold. Everyone dealing with marble will agree with Michelangelo’s words: “Marble is a soul of the universe, the purest substance, created by god: it’s not simply a god’s symbol, but reflection of his image, god’s means to reveal himself. Only with the hands of god could this noble beauty have been created”.