locally owned and operated

Quality you can trust

At Custom Marble & Onyx, we craft high-quality countertops and custom marble surfaces for kitchens, bathrooms, and more. As a family-owned and operated company, we combine precision craftsmanship with personalized service to bring your vision to life.

Kitchen Countertops

A sleek, modern kitchen scene featuring a dark sink, a tall silver faucet, and a white countertop against a marble wall.

Bathrooms

A modern white marble bathroom vanity with a sleek, minimalist vessel sink and a matte metallic faucet.

Specialty

Modern kitchen with white marble countertops, a gold faucet, under-cabinet lighting, and dark upper cabinets.

Types of Stone

An angled close-up of a sample rack featuring various stone, quartz, and laminate countertop material swatches.

Gallery

Modern kitchen with a marble waterfall island, white cabinetry, integrated appliances, and under-cabinet lighting.

A Name You Can Trust

Custom Marble & Onyx is a locally owned and family-operated business in Modesto, CA, proudly serving customers since 1988. We are committed to providing the highest level of product quality and personalized service available. One of our primary goals has always been to become a name you can trust.

We understand the value of a satisfied customer. Whether you are a large contractor, developer, or homeowner, every project completed by our qualified team reflects the care and professionalism that has been the foundation of our growth.

From kitchens to bathrooms, we install a wide range of natural and man-made materials designed to enhance both style and functionality.

Stone Options We Offer:

White marble surface with delicate, flowing gray veins across the texture.

Quartzite

Quartz Surfaces

Close-up view of the jagged, translucent surface of a pale pink rose quartz crystal.
A textured beige surface featuring a subtle, light-colored mottled marble pattern.

Marble

Soapstone

A close-up, top-down view of a textured dark gray stone surface with subtle white and green mineral veining throughout.
A close-up, top-down view of a textured dark gray stone surface with subtle white and green mineral veining throughout.

Corian Surfaces

Engineered Marble

A texture of white marble stone with subtle grey veining running diagonally across the surface.
A close-up view of white marble stone with faint, soft grey veining throughout the smooth, polished surface.

Porcelain Slabs

We also offer eco-friendly products made from recycled materials for customers looking for sustainable options.

Cultured Marble

Cultured marble is a practical and versatile solution, especially for bathrooms and custom applications. It provides a seamless, clean look while being durable and easy to maintain.

Our team custom installs cultured marble surfaces tailored to your space, making it a great choice for vanity tops, shower pans, shower surrounds, and more.

White marble surface with delicate, flowing gray veins across the texture.

Solid White

White on White

Close-up view of the jagged, translucent surface of a pale pink rose quartz crystal.
A textured beige surface featuring a subtle, light-colored mottled marble pattern.

Innocent Blush

Almond

A close-up, top-down view of a textured dark gray stone surface with subtle white and green mineral veining throughout.
A close-up, top-down view of a textured dark gray stone surface with subtle white and green mineral veining throughout.

Fawn Beige

Oyster

A texture of white marble stone with subtle grey veining running diagonally across the surface.
A close-up, top-down view of a textured dark gray stone surface with subtle white and green mineral veining throughout.

Ice Grey

Country Grey

A texture of white marble stone with subtle grey veining running diagonally across the surface.
A close-up view of white marble stone with faint, soft grey veining throughout the smooth, polished surface.

Expresso

Heron Blue

A texture of white marble stone with subtle grey veining running diagonally across the surface.
A close-up view of white marble stone with faint, soft grey veining throughout the smooth, polished surface.

Timberland Green

Black

A texture of white marble stone with subtle grey veining running diagonally across the surface.

Heavier Veining Available Upon Request

Family Owned & Operated

All of our manufacturing and fabrication is completed at our facility and installed by our own professional crew. This allows us to closely monitor every step of the process, ensuring consistent quality and timely delivery.

By managing everything in-house, we’re able to provide dependable service and competitive pricing while maintaining high standards on every project.

We offer a wide selection of materials to match your design goals and performance needs. Whether you're updating a kitchen, remodeling a bathroom, or working on a new build, we have options to suit every style.

Custom Marble & Onyx carries trusted brands known for durability and long-lasting beauty, including Green Mountain Soapstone, Silestone, Cambria, Caesarstone, Pedrafina, and more.

Nature's Symphony

Breathtaking colors of our planet
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Faces of Humanity

Portraits of people from around the globe
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Sands of Time

Stark beauty of desolate dunes
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Beyond Boundaries

Visual odyssey across continents
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Our Process

We make it easy to get started and keep your project moving smoothly from concept to completion.

Share your ideas and project details

Provide measurements and reference drawings

Receive a clear and accurate estimate

Approve your materials and design

Professional installation

Helpful Tip:

You can receive a free estimate by presenting your measurements and a reference drawing. You may also pre-send your plans or drawings to speed up the process.


Text (209) 595-0527 or Email  custommarbleandonyx@gmail.com

Any Question Call us at (209) 531-2200

Unleash Your Creativity

When you choose us for your remodel or new construction projects, we encourage you to share your ideas. Our friendly and artistically oriented team will guide you through the possibilities and help you explore the full potential of marble, granite, quartz, and corian surfaces.

We’re here to help you create the look you’ve always wanted.

Visualize Your Project

Not sure which material or color is right for your space? Use our visualizer tool to preview different surfaces and finishes before making a decision.

See how your countertops and surfaces will look in real life and choose with confidence.

⭐⭐⭐⭐⭐

We received very informative service. The sales person was very friendly and professional. She was able to answer all our questions and accommodate all our requests. I highly recommend you visit this business before making any decisions for your home.


- Barry W.

⭐⭐⭐⭐⭐

Great cust service


- Mike

⭐⭐⭐⭐⭐

I'm a local contractor, and use Custom Marble and Onyx for all our countertops and solid surface showers. Really dependable, great to work with. Highly recommended.


- Greg S.

⭐⭐⭐⭐⭐

The workers that put in our showers and counter tops impressed me with their excellent work ethics. Great manners! Thank you !


- Linda J.

⭐⭐⭐⭐⭐

Very good quality great installed very friendly workers did two bathroom three counter top very happy with all of it will go back to do my kitchen tops


- Name A.

Call us today or visit our showroom to get started. Whether you're planning countertops, islands, or showers, we’re here to help with expert installation, and quality materials you can trust.

Bring your measurements or drawings for a free estimate and let’s start your project today.