• What is granite?
  • A very hard, crystalline, igneous rock, gray to pink in color, composed of feldspar, quartz, and lesser amounts of dark ferromagnesium materials. Gneiss and black “granites” are similar to true granites in structure and texture, but are composed of different minerals.
  • How is it best used?
  • Granite has been historically favored for exterior use. Their composition makes them both resistant and stable, and surfaces will a high polish longer. As a rule, weaker stones require greater and more costly reinforcement.
  • What is the general price range?
  • $35-$99 sq. ft. (price per sq. ft. installed for in stock materials)
  • Porosity and sealing
  • Granite's beautiful surface is highly resistant to scratching, cracking and staining, and can handle most common household acids However unsealed granite can be susceptible to germs, bacteria and even mold. It is recommended to seal granite countertops once per year.
Black granite fireplace surround in a family room.


  • What is marble?
  • A metamorphic crystalline rock composed predominantly of crystalline grains of calcite, dolomite, or serpentine, and capable of taking a polish.
  • How is it best used?
  • Final design should always be based on specific values for the stone variety ultimately to be installed. These values may be obtained from the Stone Supplier. All materials are not suitable for all uses. In order to avoid mistaken selections, tests for material values should be made prior to final material selection.
  • What is the general price range?
  • $55-$75 sq. ft. (price per sq. ft. installed for in stock materials)
  • Porosity and sealing
  • Marble is softer and less durable than granite. It is vulnerable to household acids like vinegar, mustard and citrus. The acidic substances can cause etching when in contact with marble. If liquids are left unattended on marble for extended periods of time, it can leave a lasting stain. Like granite, marble must be sealed regularly.
Beautiful high end kitchen island with marble countertop.


  • What is quartzite?
  • A dense, hard metamorphic quartz based stone typically formed from sandstone. In some deposits, intrusion of minerals during the formation process creates unusual coloration.
  • How is it best used?
  • Quartzite, the silica-cemented, unmetamorphosed variety, tends to occur in sedimentary units or beds, and the thicker quartzite ledges are generally more useful than the thinner occurrences. With thicker units of quartzite, the distinction between metamorphosed and unmetamorphosed types makes little difference to those in the stone industry. Quartzite breaks across grains, not around grains. Thus it is very hard (H=7), durable, and for practical purposes, not a soluble stone, making it a desirable material for some difficult installations where exposure to water may be a problem.
  • What is the general price range?
  • $90-$130 sq. ft. (price per sq. ft. installed for in stock materials)
  • Porosity and sealing
  • Quartzite is more durable than granite, but just like most natural stone, it can be susceptible to staining. If liquids are left unattended for an extended period of time, staining may occur. As with granite and marble, it is recommended to seal quartzite regularly.
Gray quartzite slab sample with blush color veining.

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