Stone Information


Natural Stones are quarried out of mountains or underground from all over the world and then cut into blocks.

The various sized stone blocks are then transported to the cutting and finishing plants where the stones are cut into various sizes and shapes and then the face is finished into a polished, honed, flamed, brushed, hammered, etc. based on the customer’s specifications.

One beautiful characteristic of natural stone is that there are no two pieces of natural stone alike. Some stones may have extreme variation in color and veining from tile to tile or slab to slab.

This characteristic is common in many types of stone, and is part of the inherent beauty of using a natural product in your home or project.

Marble is a metamorphic rock resulting from the recrystallization of limestone. Commercially, however, all calcareous rocks produced by nature and capable of taking a polish are called marbles, as are some dolomite and serpentine rocks. (See "Glossary" for clarification.) The groupings – A, B, C, and D – should be taken into account when specifying marble, for all marbles are not suitable for all building applications. This is particularly true of the comparatively fragile marbles classified under Groups C and D, which may require additional fabrication before or during installation. These four groups are:

  • GROUP A: Sound marbles with uniform and favorable working qualities; containing no geological flaws or voids.
  • GROUP B: Marbles are similar in character to the proceeding group, but with less favorable working qualities; may have natural faults; a limited amount of whizzing, sticking and filling may be required.
  • GROUP C: Marbles with some variations in working qualities: geological flaws, voids, veins and lines of separation are common. It is standard to repair these variations by one or more of several methods–whizzing, sticking, filling or cementing. Liners and other forms of reinforcement are used when necessary.
  • GROUP D: Marbles similar to the preceding group, but containing a larger proportion of natural faults, maximum variations in working qualities, and requiring more of the same methods of finishing. This group compromises many of the highly colored marbles prized for their decorative values.