Onyx marble: prices, colours and backlighting
Onyx marble costs ₹800–₹2,500 per sq ft on our list, depending on the colour and grade. Our catalogue lists beige, blue, pink and white onyx. It's a translucent, banded stone that glows when lit from behind, and a soft one that acids can mark, so it suits walls, bar fronts and decorative pieces more than busy floors.
Onyx on our list
Indicative 2026 prices per sq ft for slabs at our yard in Kishangarh, GST extra. Every slab is different, so ask for photos and video of the actual slabs before you choose.
Beige Onyx
₹800–₹2,000 per sq ft
A warm, golden-yellow stone that glows with an amber hue when backlit. It adds a rich, inviting warmth to spaces and is often used in luxury hospitality settings.
Backlit Bars · Powder Room Vanities · Lobby Features
Blue Onyx
₹1,000–₹2,000 per sq ft
A rare and breathtaking stone featuring bands of blue, gold, and white. Like all onyx, it is translucent and can be backlit to create a glowing, ethereal masterpiece.
Backlit Feature Walls · Bar Fronts · Decorative Objects
Pink Onyx
₹1,500–₹2,500 per sq ft
A delicate, dream-like stone with soft pink and white cloud-like patterns. It creates a romantic and soft atmosphere, perfect for boutique spaces.
Bathroom Vanities · Feature Walls · Decor
White Onyx
₹1,500–₹2,500 per sq ft
Also known as Falux or Snow White Onyx. It features a pure, cloudy white background with subtle gold or grey veins. Highly translucent and perfect for backlighting.
Backlit Features · Luxury Bathrooms · Statement Islands
What onyx marble is
In the stone trade, onyx or onyx marble is banded calcium carbonate (calcite), also sold as cave onyx or Mexican onyx. It isn't the gemstone onyx, a banded chalcedony that is much harder, 6.5 to 7 on the Mohs scale. Source: Wikipedia, “Onyx”.
Why it glows
Onyx is translucent: light passes through it and lights up its bands and colours. That's why it is used for backlit walls, bar fronts and panels, like the famous onyx wall in the Villa Tugendhat. Source: Wikipedia, “Onyx”. How much light comes through varies from slab to slab, so ask to see the actual slab lit from behind before you choose.
Hardness and care
- Calcite is 3 on the Mohs hardness scale, and acids dissolve it. Source: Wikipedia, “Calcite”.
- Lemon, vinegar and other acids can dull or etch it, so wipe spills straight away.
- Clean with a neutral cleaner, stone soap or a mild dishwashing liquid and warm water.
- A sealer makes it more stain resistant, not stain proof.
- A stone restorer can repolish etched spots. Source for the care points: Natural Stone Institute, cleaning products for natural stone.
Questions about onyx marble
Is onyx marble real onyx?
Not the gemstone. In the stone trade, onyx or onyx marble is banded calcium carbonate (calcite), also sold as cave onyx or Mexican onyx. Gemstone onyx is a banded chalcedony and much harder, 6.5 to 7 on the Mohs scale.
How much does onyx marble cost?
On our list, onyx marble costs ₹800–₹2,500 per sq ft: Beige Onyx ₹800–₹2,000, Blue Onyx ₹1,000–₹2,000, Pink Onyx ₹1,500–₹2,500, White Onyx ₹1,500–₹2,500. These are indicative 2026 prices for slabs at our yard in Kishangarh, GST extra. The firm price depends on the slab you choose.
Can onyx be used on floors or kitchen tops?
It's a poor fit for heavy wear. Onyx marble is calcite, which is 3 on the Mohs hardness scale, and acids such as lemon and vinegar can dull or etch it. It suits walls, bar fronts and decorative pieces better than busy floors or kitchen worktops.
How do I clean and look after onyx?
Clean it with a neutral cleaner, stone soap or a mild dishwashing liquid and warm water, and keep lemon, vinegar and other acids off it. A sealer makes it more stain resistant, not stain proof. If acid dulls the polish, a stone restorer can repolish it.
All our prices: marble and granite price list. Sources read on 12 Nov 2026: Wikipedia, “Onyx”, Wikipedia, “Calcite”, Natural Stone Institute, cleaning products for natural stone.
Planning a backlit wall or bar?
Tell us the colour, the size and your city. We'll send photos and video of real onyx slabs and a firm price.