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3 types of black marble and how to care of them

Black marble offers a luxurious look that you can’t miss, these are three of the most famous types.

The black color of this type of stone is mainly explained by its genesis in continental shelves that have received an important volume of carbonate sediments with abundant organic matter, in conditions of oxygen scarcity. This kind of deposits have occurred in several geological stages of the Mesozoic (Cretaceous) and Paleozoic (Devonian-Carboniferous) in different areas of the world.

Nero Dorato, Tunisia

This Black Marble originary from Tunisia it can be known with several names just as Nero Dorato, Nero Sahara, Nero Tunisi, Nero Berber, etc. It is located in the Zaghouan area in northeastern Tunisia, 60 km south of Tunis.

It is micritic limestones with the presence of oolites and plantonic foraminifera. The colors range from gray to black. White veins of calcite recrystallization appear in white, brown and golden colors.

nero dorato marble

The main characteristics of the Nero Dorato Marble are.

  • Tunisian
  • Fine grained
  • With occasional fossils
  • Very dark gray to black background
  • White and/or brown/golden calcite recrystallization veins.

Nero Portoro, Italy

The Nero Portoro marble is an Italian marble and is considered one of the most luxurious marbles in the world. Its knowledge and use comes from the Romans who began to extract it manually during the VII and VIII centuries.

It is a black Micritic limestone with golden veins containing limonite and sulfides. The composition is mainly calcite with dolomite as a secondary. The black color comes from organic matter, bitumen and sulfides from an anaerobic environment.

nero portoro italy

The quarries are located in the surroundings of the city of La Spezia, and are geologically framed within the Portovenere limestone formation of the Tuscan Skirt belonging to the Upper Triassic-Lower Cretaceous.

The main characteristics of the Nero Portoro are:

  • Italian
  • Fine-grained
  • With occasional fossils
  • Very intense black background
  • Very characteristic golden veins due to their wavy shape and irregular filling.

Black and Gold, Pakistan

Black & Gold is a black marble found in the mountains of the province of Balochistan, located in the Southwest of Pakistan. Other natural stones such as Onyx and Granite are also quarried in this province.

It is a black background marble with golden and white veins. It is very characteristic of this marble the great quantity of golden and white veins.

black and gold pakistan

The main characteristics of this marble are

  • Pakistani
  • Total absence of fossils, being also geologically a marble (fossils disappear in the metamorphism process).
  • Intense black shades
  • Golden and white veins. The white ones are more abundant in lower grades.

Most common applications 

Although we will see in all the manufacturers’ recommendations that black marble is recommended for use in flooring, we should point out that black marble are generally softer than white, beige, etc. and therefore are more susceptible to scratching and erosion by its use. For this reason, it is not recommended for use in pavements, especially in high traffic areas such as commercial areas.

read: general uses of marble.

It is usually combined with other lighter marbles, especially with white. The beautiful black and white checkerboard pattern is widespread all over the world. They combine very well with light tones, beige, cream, light grey, etc. The only limits are set by your imagination. 

How to care for your black marble?

This types of black stones, as it was mentioned before, are limestones and therefore sedimentary rocks, of carbonate composition, whose black color is usually due to the abundant organic matter. Due to their composition, they react with acids. So special care must be taken not to use any acid pH cleaner.

Some manufacturers use dyes or color intensifiers during the resin process, so they can lose intensity over time. To recover the vividness of your black marble, there are some products on the market that applied from time to time ensure an optimal appearance.

And finally we advise for an ideal final finish and in the case of applying a polished finish, it is preferable to install the material previously polished in the factory, since the industrial polishers ensure a level of brightness that does not match the floor polishers on site.