Granite
Budget-friendly and durable, granite is a popular choice for countertops — sought after for its longevity and its regality.
Countertops
GBC is the leading marble, granite, and natural stone supplier, fabricator, and installer serving the Washington DC metro. We specialize in kitchen countertops, bathroom vanities, bar tops, flooring, fireplaces and stone furnishing — slabs transformed into meticulously crafted pieces in our own modern plant.
Materials
Budget-friendly and durable, granite is a popular choice for countertops — sought after for its longevity and its regality.
Timeless and luxurious, marble brings an unmatched elegance to kitchens and bathrooms. GBC fabricates and installs marble slabs with precision-cut edges and custom finishes.
Engineered for performance and beauty, quartz combines natural stone content with resin for a non-porous, low-maintenance surface available in hundreds of colors and patterns.
Traditional and old-fashioned. Charming, rustic and rich-looking, yet versatile enough to fit comfortably within a modern home.
A premium natural stone harder than granite, quartzite offers the elegant look of marble with superior durability. Ideal for high-use kitchen surfaces and waterfall islands.
Our designers can help you match the right stone to the right room — talk to a specialist before you commit.
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Material guides
Good to know
Granite is 100% natural stone — every slab is unique and it is very heat-resistant, but it is porous and needs periodic sealing. Quartz is engineered from ground stone and resin — it is non-porous, never needs sealing, resists stains well, and offers more consistent color, though it is less heat-tolerant than granite.
Quartzite and granite are the hardest, most scratch- and heat-resistant natural options. Engineered quartz is extremely durable and the easiest to maintain. Marble is the softest of the common premium materials and is more prone to scratching and to etching from acids.
No. Quartz is non-porous, so it never needs sealing. Natural stones such as granite, marble, and quartzite are porous and should be sealed at installation and resealed periodically — typically every one to three years, depending on the stone and how heavily it is used.
Installed countertops generally run about $40–$100+ per square foot depending on the material, edge profile, and slab grade. Quartz and mid-grade granite sit in the middle; exotic quartzite and premium marble are at the top. Most kitchens need roughly 40–60 square feet.
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