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Welcome to Sia Stones; we are among the top suppliers and exporters of high-quality onyx slabs. We offer high-quality onyx slabs for sale at competitive prices.

Onyx has become a priority for interior designers working on luxury interior and exterior projects. It’s a type of quartz with a translucent appearance and various colours and patterns. It is formed by silica deposition in caves and other underground spaces. Onyx has a hardness of 6.5 to 7 on the Mohs scale, and it can be polished to a high shine. Onyx stone has a long history of use in various cultures and traditions. It was believed to have protective and healing properties.

We offer a wide variety in Onyx; browse our exclusive collection for more details. You can choose from our ready-made stock or customize your order according to your specifications. Our Commitment to quality knows no compromises. We source high-quality onyx blocks from Iran, India, Turkey and Indonesia quarries.





















If you want to buy Onyx from us, please fill out our contact form and send us your inquiry. We will get back to you with more details and a quote soon. You can also call us or email us if you have any questions. We are always happy to assist and provide the best service possible.


Our onyx slab price is based on the size, thickness, color, and pattern of the slab. The average price range for onyx slab and tiles is between USD 35 and USD 180 per square foot ex-factory. Our transparent pricing policy ensures you get the best value for your money. You can get a free quote by filling out our online form or contacting us directly. We offer competitive factory prices and discounts for businesses, resellers and homeowners.


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Translucent Backlit Onyx Slabs

Our onyx slabs have the unique property of being translucent, allowing light to pass through them. This creates a stunning effect when they are backlit with LED lights or natural sunlight. You can create a fantastic ambiance and mood with our translucent onyx slabs.

Backlit Onyx Backsplash
Backlit Onyx Bar Countertop
Backlit Onyx Bar Countertop L Shape
Backlit Onyx Bathroom Countertop
Backlit Onyx Bathroom Vanity Top
Backlit Onyx Countertop
Backlit Onyx Kitchen Countertop
Backlit Onyx Kitchen Island Countertop
Backlit Onyx Wall

Types of Onyx Forms We Supply

We manufacture and process Onyx blocks into various forms to suit different applications and design preferences. Here are some common forms:

Slabs: Onyx slabs are large, flat pieces of stone used for countertops, wall cladding, and flooring. They showcase the stone’s intricate patterns and translucent qualities. Available in various sizes and thicknesses.

Tiles: Onyx tiles are smaller, cut pieces suitable for flooring, wall applications, and backsplashes. We manufacture these tiles in many sizes and thicknesses.

Pre-Fabricated Tabletops and Countertops: We provide ready-to-installation pre-fabricated tabletops and countertops if you have precise sizes for the installation.

Stairs and Steps: We can also supply Onyx stair treads and risers with polished or bullnose front edges. Miltered edging is also possible.

Furniture Accents: We can incorporate Onyx into furniture pieces as accents, creating a luxurious touch on coffee tables, dining tables, side tables, and consoles.

Decorative Panels: Onyx panels can be used for wall partitions, room dividers, and decorative screens, allowing light to pass through.

Iranian Onyx

Iranian Onyx is a type of natural stone with stunning beauty and elegance. It is formed by depositing limestone sediments in fresh water, creating a crystalline structure with high transparency. Iranian Onyx comes in various colours, such as blue, white, pink, green, yellow, and brown, and often has veins or bands of different shades. Iranian Onyx is very rare and expensive, and it is mainly used for decorative purposes, such as wall and floor cladding, stairs, statues, fireplaces, and monuments. Iranian Onyx can also be backlit to enhance its brilliance and charm. Iranian Onyx is one of the most exquisite and luxurious stones in the world, reflecting Iran’s rich culture and history.

Natural Onyx Stone Slabs

Our onyx slabs are 100% natural and authentic. They are not treated with any chemicals or artificial colors. They retain their original beauty and charm for a long time.

Book Matched Onyx Slabs

Our onyx slabs can be book-matched, which means they are cut and polished in such a way that they form a mirror image of each other. This creates a symmetrical and harmonious pattern that enhances the aesthetic appeal of your space.

Some Common Applications of Onyx Slabs and Tiles

Interior Designs: Onyx is commonly used for creating beautiful interior designs due to its unique and luxurious appearance.
Countertops: Onyx slabs are commonly used to create countertops in kitchens, bathrooms, and bars.
Wall Cladding: Onyx is often used as a wall cladding material and features walls in residential and commercial spaces.
Flooring: Onyx slabs are used for flooring, as it’s available in book matched patterns.
Backlit Features: Onyx’s translucent properties make it ideal for backlighting in lighting fixtures, panels, and bars.
Tabletops: Onyx is widely used to make luxury tabletops.
Bathroom Designs: Onyx slabs can be incorporated into bathroom design elements such as vanities, sinks, and shower walls.
Fireplace Surrounds: Onyx adds a touch of luxury to fireplace surrounds, enhancing the overall ambiance of a room.
Staircases: Onyx tiles, slabs and risers are used to create stunning staircases, enhancing the visual appeal of interior spaces.
Artistic Installations: Sculptors and artists often use Onyx to create intricate and captivating art pieces.
Retail Spaces: Onyx slabs are sometimes used in high-end retail spaces to create a lavish and inviting atmosphere.
Hotels and Resorts: Onyx is chosen for interior design in luxury hotels and resorts.
Spa Environments: The soothing and elegant nature of onyx makes it a suitable choice for spa interiors.
Conference Rooms: Onyx slabs can be used to craft impressive conference room tables and panelling.
Atriums and Lobbies: Large onyx installations in atriums and lobbies can create a grand entrance and leave a lasting impression.
Furniture Accents: Onyx can be used as accents in furniture design.

Size and Thickness Options in Onyx

We have many sizes and thickness options available for onyx slabs and tiles. We can also manufacture custom cut-to-sizes as well for projects.
The most common sizes for onyx slabs and tiles in inches and cm are:

Onyx Tiles: 12″ x 12″ (30.5 cm x 30.5 cm) and 16″ x 16″ (40.6 cm x 40.6 cm), 18″ x 18″ (45.7 cm x 45.7 cm) and 12″ x 24″ (30.5 cm x 61 cm), 24″ x 24″ (61 cm x 61 cm) and custom cut to sizes.

Onyx Slabs: (71″ – 126″) x (24″ – 87″) [(180 cm – 320 cm) x (60 cm – 220 cm)] and custom cut to sizes.

Countertops: 96″ × 26″ (244 cm x 66 cm), 108″ × 26″ (274 cm x 66 cm), 96″ x 16″ (244 cm x 41 cm), 72″ x 36″ (183 cm x 91 cm), 76″ x 36″ (193 cm x 91 cm), [71″ x 24″] (180 cm x 60 cm) and [94″ x 24″] (240 cm x 60 cm) and custom cut to sizes.

Thickness options: 10mm, 15mm, 20mm, 30mm and custom thickness.

Buy Onyx Slabs and Tiles from Sia Stones

With years of experience, a global shipping network, and a dedicated customer support team, we simplify your journey from selection to installation.

There are many reasons why you should buy onyx slabs from Sia Stones. Here are just a few:

  • We offer various onyx slabs in different colors, patterns, sizes, and thicknesses.
  • We use the finest quality onyx blocks, and our slabs and tiles are perfectly polished.
  • Our team of experienced professionals can help you with your project.
  • We offer the best onyx slab price and quality in the market.
  • We have an excellent shipping and delivery network and shipping and delivering globally.
  • We use reliable and reputable carriers to ensure your order’s safety and timely delivery.
  • We also provide proper packaging and documentation to avoid damage or customs clearance delays.
  • We offer excellent customer service and support before, during and after your purchase.
  • There is no minimum order quantity.

FAQs Related to the Onyx Slabs

Onyx is a type of calcite stone, while marble is a metamorphic stone. Both stones are composed of calcium carbonate but have different origins and properties. Onyx is formed by depositing mineral-rich water in caves or fissures, while marble is formed by the metamorphism of limestone or dolomite under high pressure and temperature. Onyx has a more translucent and glossy appearance than marble, while marble has a more opaque and matte appearance than Onyx.

While onyx is primarily used indoors, it can still be used in controlled outdoor environments, avoiding direct sunlight.

Yes, we offer custom-cut-to-size options to fulfill your project requirements.

We offer a wide variety of sizes and thickness options for our onyx slabs, some mentioned in the sizes section above; get in touch with us if you have customized requirements.

Avoid direct exposure to heat, sunlight, or acidic substances, wiping off any spills or stains immediately with a soft cloth and mild soap, and polish the slab with a non-abrasive cloth and wax to maintain its shine.

No, there is no minimum order quantity in onyx slabs. You can order a single slab as well.

Repairing chipping or cracks in onyx slabs can be challenging due to the stone’s delicate nature. Small chips may be repairable, but larger damages might require professional restoration. Preventing such issues through careful usage and maintenance is the best approach.

Yes, onyx slabs are often backlit to create a stunning visual effect, especially in bathrooms. Backlit onyx panels can be used for shower walls, vanity backsplashes, or even as illuminated partitions, adding a luxurious and soothing ambiance.

Onyx slabs can be used in commercial spaces to create an upscale and luxurious atmosphere. However, it’s essential to choose suitable applications carefully. Consider areas where onyx’s unique appearance can be showcased without subjecting it to excessive wear and tear.