From Quarry to Countertop: The Journey of Granite and Marble
May 1, 2025
Understanding the Quarrying and Processing Techniques for Granite and Marble
Granite and marble are two of the most sought-after natural stones for countertops and vanities, prized for their aesthetic appeal and timeless elegance. But how does a raw stone from deep within the Earth become the stunning countertop or vanity that enhances your kitchen or bathroom? The process involves both intricate quarrying and careful fabrication to ensure each piece of granite or marble meets the desired look and functionality.
In this post, we'll walk you through the steps of quarrying and processing granite and marble, from their extraction in quarries to their final transformation into beautiful surfaces, including the crucial fabrication and installation process by companies like MGL Granite.
The Quarrying Process: Extracting Granite and Marble
The journey of granite and marble begins deep underground, where these stones are found in large deposits. Quarrying is the first step in bringing these raw materials to the surface.
1. Locating the Quarry
Granite and marble deposits are generally located in regions known for their unique geological formations. Granite is often found in large veins, while marble is typically found in areas that were once ancient seabeds. The best-known marble quarries are in Italy, Greece, and Turkey, while granite is extracted in countries like Brazil, India, and the United States.
Once the stone is located, geologists and quarry operators assess the quality and size of the deposit to ensure that the stone will meet the specific needs of countertop and vanity projects. This includes examining the stone’s patterns, color, and overall quality.
2. Extracting the Stone
The extraction process begins with the drilling of holes into the stone to insert explosives, which help loosen the large blocks of granite or marble. The stones are then cut free from the quarry using heavy machinery, such as diamond wire saws, which can handle the dense, tough material. These blocks of stone can weigh tons and must be carefully handled during extraction to prevent damage. After extraction, the large blocks are transported to processing facilities, where they will be cut into slabs for further refinement.
The Processing Process: Shaping the Stone
After extraction, the granite or marble blocks are ready for processing. This stage is where the raw stone is transformed into beautiful slabs that are suitable for use as countertops, vanities, and backsplashes.
1. Cutting the Stone into Slabs
At the processing facility, the first step is to cut the raw blocks of granite or marble into slabs of manageable size. This is done with industrial saws equipped with diamond-tipped blades. Depending on the size of the block, multiple slabs can be cut at once, maximizing the yield from each stone block. The slabs are typically cut to standard dimensions, such as 10 to 12 feet long and 1.25 to 2 centimeters thick, although custom sizes can be requested for specific projects. For particularly large blocks, multi-wire machines are used, which allow for more precise cutting, and the ability to cut several slabs at once.
2. Polishing and Finishing the Surface
Once the slabs are cut, they are polished to enhance the stone's natural color and veining. Polishing machines use abrasive pads and polishing compounds to give the stone a smooth, glossy finish. The level of shine varies depending on the desired finish—from a high-gloss shine to a matte or honed finish, which is particularly popular for marble in bathroom vanities. Granite typically features a glossy finish, which makes its natural colors and patterns pop, while marble, depending on the finish, can offer a more subtle elegance. Other finishes, like brushed or leathered, can also be applied, giving the stone a unique, textured look.
3. Fabrication: Customizing the Slabs
Once the slabs are polished and the surface is perfected, it’s time for fabrication. This is where the stone is cut and shaped to meet the specific needs of the project. At this stage, the fabricator, like MGL Granite, will customize the slabs for your countertops or vanities. Fabrication involves cutting out areas for sinks, faucets, and other features, as well as shaping the stone with edge profiles. Popular edge styles include straight, beveled, bullnose, ogee, and more (which we discuss further in a different blog post). The fabricator carefully measures and cuts the slabs, ensuring that the finished product fits perfectly within the intended space. The edges of the stone are also polished during this process to ensure they have a smooth, refined finish. Whether you prefer a sleek, modern edge or a more decorative profile, the fabricator can create the ideal edge for your design.
Quality Control: Inspecting the Material
At MGL Granite, we believe in ensuring that only the highest-quality materials are used in your project. Before we begin the fabrication process, we carefully inspect all the granite and marble material once it is delivered to us. This allows us to ensure that the stone meets our standards and is free of any defects that could affect the final product.
This step is crucial, as it ensures that we work with the best possible material before any cutting or shaping takes place, ensuring a flawless result for your countertops or vanities.
Transporting and Installing the Finished Slabs
After fabrication is complete, the granite or marble slabs are ready for installation. Once the finished slabs arrive at the job site, it’s time to set them in place. At MGL Granite, our skilled installers take great care in placing the slabs accurately, ensuring the seams are tight and the edges are polished to perfection.
During the installation, we also make any final adjustments necessary to fit the slabs to the exact dimensions of your kitchen or bathroom. Once in place, the stone is cleaned, and final sealing is often applied to protect the surface and enhance its durability.
Conclusion
The journey from raw stone to beautiful countertop or vanity is a carefully executed process, requiring expertise and attention to detail at every step. From quarry extraction to meticulous fabrication and expert installation, the process ensures that the final product is both functional and stunning.
At MGL Granite, we manage every aspect of the process—from the moment the stone is delivered to our facility, through the careful inspection and fabrication, to the final installation. Whether you’re choosing granite or marble, our team ensures that you get the highest quality stone and the best craftsmanship for your home.
If you’re shopping for new countertops or starting a kitchen or bathroom remodel, you’ve probably come across a few different types of companies: stone wholesalers, fabricators, and kitchen & bath companies. But what exactly does each one do—and who should you go to for what? Here’s a simple breakdown to help you better understand the roles these businesses play in your project: 1. Stone/Slab Wholesalers What They Do: Stone wholesalers import and distribute slabs of natural and engineered stone (like granite, quartz, marble, quartzite, etc.). They typically sell only to fabricators, not directly to the public. Who They Work With: Fabricators (like us at MGL Granite) Designers and contractors (through fabricators) What to Know: If you’ve ever visited a slab yard, it was probably through a fabricator. You can typically browse and choose your slab(s) from the wholesaler, but the wholesaler won’t cut, polish, or install it—that part comes next. 2. Fabricators (That’s Us!) What We Do: Fabricators like MGL Granite cut, polish, and install stone slabs to fit your custom countertop dimensions. We’re the ones who turn a raw slab into a beautiful, finished countertop that fits perfectly in your home. Services Typically Include: Field measurements (on-site measurements) Custom cutting and edging Seaming and polishing Delivery and installation Supply and installing support brackets Optional sealing and aftercare services What to Know: Fabricators are your go-to for anything related to stone surfaces—whether you need a kitchen countertop, a bathroom vanity, a fireplace surround, or a custom stone feature. We source slabs through wholesalers or showrooms, and then fabricate them to suit your space and style. 3. Kitchen & Bath Companies What They Do: Kitchen and bath companies usually offer full-service remodeling, including layout design, cabinetry, flooring, lighting, and appliances. Many of them also coordinate countertops as part of the process, but they don’t fabricate the stone themselves. Who They Work With: Homeowners doing full remodels Subcontractors like plumbers, electricians—and countertop fabricators Designers What to Know: If you’re doing a full kitchen or bath remodel and want one company to manage everything, a kitchen & bath company might be the right choice. But keep in mind, they’ll likely hire a fabricator (like us) behind the scenes to handle the actual countertop work. Why This Matters to You Understanding who does what can save you time, money, and stress. If you're focused on choosing the perfect countertop and want to work directly with the experts who will cut and install it, a fabricator is your best bet. At MGL Granite, we walk you through the entire process—from selecting the right stone to installation—making your project as smooth and enjoyable as possible. If you’re working with a designer or remodeler already, just ask who they use for fabrication. And if you want to work directly with a trusted local fabricator, we’d love to help! Have Questions? Ready to Start Your Project? Contact MGL Granite today—we’re here to help you understand your options and bring your vision to life, one project at a time.
Selecting the right countertop services for your countertops is a balance of beauty, durability, and functionality tailored to the unique demands of your household.
Granite countertops are an enduring favorite in many kitchens and bathrooms. Known for their beauty, durability, and ability to add a touch of luxury to any space, granite is one of the most popular materials for countertops. However, like any natural stone, granite requires care and maintenance to ensure it stays looking its best for years to come. Below, we provide a comprehensive guide to maintaining and caring for your granite countertops so you can enjoy their beauty and functionality for the foreseeable future. 1. Sealing Your Granite Countertops Granite is a porous material, which means it can absorb liquids like water, oil, and wine. This can lead to stains, discoloration, or even bacteria buildup if it is not properly sealed. Most granite countertops come pre-sealed when installed, but over time, the sealant can wear off. How to seal your granite countertops: Clean the surface thoroughly using mild dish soap and warm water. Then, let it dry completely. Apply a granite-specific sealant to the countertop in thin layers. Follow the manufacturer’s instructions, but generally, you should wait around 24 hours before using the countertop after applying the sealer. To check if your granite is still sealed, sprinkle a few drops of water on the surface. If the water absorbs into the stone, it's time to reapply the sealant. We recommend sealing granite countertops every 12-18 months, depending on the type of sealant used, the amount of use the countertop gets, and its finish (leather, polished, honed). Sealing granite is something that homeowners can do themselves or hire a professional to do too (such as MGL Granite). 2. Cleaning Granite Countertops Daily cleaning of your granite countertops is essential for keeping them looking pristine. Fortunately, it is very easy and straightforward to clean your countertops. How to clean granite countertops: Use a gentle dish soap and warm water solution to wipe down the surface with a soft cloth or sponge. Avoid using harsh chemicals, bleach, or abrasive scrubbers, as these can damage the granite or strip its sealant. For tough stains or spills, mix a paste of baking soda and water, apply it to the stain, and let it sit for a few hours before wiping it off with a damp cloth. For a streak-free shine, dry the countertop with a microfiber cloth after cleaning. 3. Preventing Scratches and Damage Granite is incredibly durable, but it’s not impervious to damage. To prevent scratches and other harm, follow these simple precautions: Tips to prevent damage: Always use cutting boards when chopping, slicing, or preparing food. Avoid cutting directly on the granite surface, as it can dull your knives and cause scratches. Use trivets or hot pads under pots, pans, or baking dishes to prevent heat damage. While granite can withstand high temperatures, sudden temperature changes (like placing a hot pan directly on the surface) can cause cracks or discoloration. Be cautious with acidic substances such as lemon juice, vinegar, or wine and wipe up any spills as soon as possible. While granite is generally resistant to acids, prolonged exposure can eventually cause damage to the stone or its sealant. 4. Dealing with Stains Granite is relatively stain-resistant, but it’s still a good idea to address any spills promptly to avoid long-term damage. Certain substances like oil, wine, and coffee can leave stains on the surface if not cleaned quickly. How to tackle stains: For oil stains, make a paste with baking soda and water and apply it to the stain. Let it sit for several hours, then wipe it off with a damp cloth. For other stains, you can use a specialized granite cleaner or poultice designed for stone surfaces. Be sure to follow the instructions carefully to avoid damaging your countertop. 5. Polishing Granite Countertops To restore your granite countertops’ luster, occasional polishing is needed. Polishing helps maintain the stone’s natural shine while also helping to create a protective layer. You can do this yourself by utilizing a granite-specific polish and buffing the surface or you can also hire someone to do the service (such as MGL Granite). How to polish granite countertops: Use a granite-specific polish or a solution designed for stone surfaces. Apply the polish using a soft cloth and work it into the surface in circular motions. Buff the surface with a clean microfiber cloth for a streak-free finish. 6. Regular Inspections Lastly, it's a good idea to regularly inspect your granite countertops for signs of wear. Look for cracks, chips, or signs that the sealant has worn away. If you notice any issues, take action right away to prevent further damage. For serious cracks or chips, you may need professional repair services to restore the countertop. Granite countertops are a long-term investment that can add both beauty and functionality to your home. With proper care and maintenance, you can keep your granite looking as stunning as the day it was installed. Remember to clean it regularly, seal it as needed, and use the proper precautions to prevent scratches, stains, and heat damage. By following these simple care guidelines, your granite countertops will continue to shine for years to come, maintaining their appeal and enhancing the overall look of your kitchen or bathroom.
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