Fabricator of Granite, Quartz, Marble Countertops- Quality, Experience, Affordable
Phone: 703 261 9093

About Natural Stone


Granite is an igneous rock, formed mainly by the crystallization of once molten material under conditions of extreme heat and pressure. Commercially, various stones of volcanic origin with different characteristics from true granites, such as pegmatite, diorite, larvikytes (labradorite) and syenites, are also sold as “granites”. The properties of granite that make it the ideal stone surface are its hardness and inherent resistance to acid – granites are not “attacked” by the acids normally present in foods and cleaning products. Yet granite is a porous stone and requires proper sealing.


Marble is a metamorphic, crystalline rock formed by the intrusion of an igneous rock into a limestone stone mass. The heat and pressure of such an event alters the original molecular structure of the calcite present in the limestone and causes re-crystallization of the calcite and the formation of new minerals. The result is marble with the much appreciated characteristics of heavy veining and wide range of colors. Marble surfaces take a high polish but are not very hard and scratch easily. Its natural composition makes marble an easy target for acids normally found in food and cleaning products. The acids etch the marble surface, damaging the polished finish. Marble is a porous stone and requires preventative sealing with silicone-based impregnators. With proper maintenance using neutral products, marble performs extremely well. It is not recommended for use in kitchens.



Quartzite (Metaquartzite), composed of more than 90% quartz, is formed from the metamorphosis of sandstone. Its crystals are tightly fused forming a hard, crystalline rock. It is an evenly textured stone, medium to fine grain, sugary in appearance, and pale in color.

Although quartzite has an extremely hard, scratch-resistant surface, it is also very porous and absorbent. By properly sealing the surface with a silicone-based impregnator, quartzite is an excellent surface for both bathrooms and kitchens.


Travertine is a sedimentary rock composed almost entirely of calcium carbonate and formed by the accumulation of calcium carbonate deposited by hot springs. Many of the old Roman ‘termas’ or baths were located in the rich travertine-producing region of Tivoli, south of Rome in the Rapolano area in Tuscany. Travertine was the stone of choice of ancient Rome.

Travertine is distinguished from other sedimentary rocks by its ‘spongy’ texture and large number of holes varying in size and shape. Travertine colors are usually light ivory and beige, but impurities and iron compounds found in the stone are responsible for the creation of red, yellow, and dark brown colors.

Travertine is durable and performs well in all types of applications, but must be properly sealed and maintained. The distinctive holes may be filled or left natural (unfilled), according to its proposed application and desired aesthetic appeal.


Limestone is a sedimentary rock formed by the cementing together of naturally accumulated rock fragments and organic sediments via a chemical process in shallow prehistoric marine environments. Limestone’s granular composition consists primarily of calcite. Limestone varies in degrees of hardness; the densest stones can be polished to a very high gloss finish. The most common colors are beige, gray, white, yellow and brown. As with marble, acid and acidic foods will etch the surface of limestone. Proper care and maintenance requires the use of only neutral soaps and detergents. Limestone is also a porous stone and requires preventative sealing with silicone-based impregnators. Limestone is quite durable, and with proper installation and maintenance, some types can perform extremely well, even in high traffic areas.




Onyx belongs to the family of chalcedony, a microcrystalline variety of quartz. Other varieties of chalcedony include Jasper, Carnelian, Agate and Tiger’s Eye. Commercially, transparent to opaque stones characterized by alternating, parallel bands of color, are known as Onyx. Most of the Onyx sold in the word today is quarried in Iran, Pakistan, Turkey and Mexico.

Onyx colors may include white, red, blue, green and brown (dark brown to very light beige). The variations of color are attributed to impurities such as iron, aluminum, and nickel present in the stone. Onyx is often used in jewelry because of its many colors and ability to polish to a high luster.

Its vitreous and brittle nature makes Onyx prone to cracking. New resins available in the marketplace today correct this problem and allow the ‘miracle of technology’ to produce slabs 10 feet long and 6 feet high, and only ¾’” thick. Onyx does not perform well under situations of intense use or in high traffic areas. Use should be limited to private areas.


We are excited to be able to offer yet another extraordinary and unique stone product. The appeal, rarity and beauty of gems have inspired legends and stories full of fantasy and adventure for centuries. Today the legend becomes a reality with the availability of these Collections. We have great pleasure in presenting to you our new Semiprecious and Gemstone Collections.


Soapstone is composed of magnesite, dolomite, chlorite and talc. Talc makes it soft to the touch. It is inert and unaffected by alkalis and acids. It can be used in science classrooms and labs. It is typically sealed with mineral oil or stone sealer.

One Quartz

ONE™ Quartz Surfaces are made using 93% natural quartz, so you get the realistic, high-polished look of granite. Balanced with that is the technology that creates an extremely durable surface in an array of colors from neutral tones to bold, luminous hues. And better yet, this quality product is proudly offered and delivered with the exceptional service you can expect from Daltile.

ONE™ Quartz Surfaces Shine with Many Distinguishing Benefits

93% natural quartz stone Realistic, high-polished look of granite Consistent colors and visual movement Wide range of color options that allow for more design freedom Durable surface that is scratch-resistant and has a long-lasting, high-gloss shine Resistance to cracking and chipping since quartz is second only to diamond in hardness Heat- and scorch-resistant under normal cooking conditions (use of a trivet is recommended for extreme heat exposure) Nonporous surface that is stain-resistant and doesn’t promote the growth of bacteria Virtually maintenance-free, no sealing necessary Ten-year limited warranty .

Crystaline Stone

Crystaline Stone are marbles and onyxes that have under gone the INTERCRYSTALINE process. This process fuses color and sealant with the crystalline structures thus obtaining a final product in a vast range of textures and exclusive tonalities and that repels water and oils.



5705 General Washington Drive
Suite D
Alexandria, VA 22312
Phone: 703 261 9093
Email: expert@countertop.expert


Countertop.Expert is the provider and fabricator of granite, quartz, marble and other countertops. Countertop.Expert is member of