Crystal Onyx White is a 60×120cm polished porcelain wall and floor tile with a bright white onyx-effect face and soft grey veining, sold by Tiles Paradise at £24.99 per m². It suits bathroom and kitchen walls, shower walls, living rooms and any dry indoor floor. It is not the tile for a shower floor, because its high-gloss surface has no stated slip rating.
Below you will find what the tile is made of, how it looks across a whole floor, where it is safe underfoot, what a real room costs, and how it compares with the other white onyx tiles we sell. Every number comes from the live product listing, checked on 20 October 2026.
| Size | 60×120cm (600×1200mm), large format |
|---|---|
| Material | Porcelain |
| Finish | Polished (high gloss) |
| Look | White onyx effect with soft grey veining |
| Thickness | 9mm |
| Edges | Rectified (machine-cut, square) |
| Use | Walls and floors, indoors |
| Underfloor heating | Suitable |
| Slip rating | Not stated: treat as a dry-floor tile |
| Box | 2 tiles = 1.44m² |
| Price | £24.99 per m² inc VAT (about £36 per box) |
What is Crystal Onyx White tile made of?
Crystal Onyx White is made of porcelain, not stone. Porcelain is a dense clay body pressed and fired at a high temperature, so it absorbs very little water. The onyx pattern is printed onto the face, and the surface is then polished to a mirror-like shine.
The name borrows from natural onyx, the translucent, banded stone the tile trade often calls onyx marble. "Crystal" describes the clear, glassy whiteness of the design. The tile copies that look, but it has none of real onyx's softness, so it does not need the careful handling and sealing that a stone floor needs. If you are weighing the real thing against porcelain, our porcelain vs real marble comparison covers cost, etching and upkeep.
Can Crystal Onyx White be backlit like real onyx?
No, Crystal Onyx White cannot be backlit. Porcelain is opaque, so light does not pass through it. Backlit onyx walls and bar fronts use thin slabs of natural stone. The porcelain tile gives the onyx look on a wall or floor at a fraction of the cost, without the glow.
What does Crystal Onyx White look like on a whole floor or wall?
Crystal Onyx White reads as a cool, bright white with soft grey cloud patterns rather than sharp veins. The polish deepens the pattern and bounces light around the room. The product gallery shows four different faces, so neighbouring tiles rarely look identical.
Lay the tiles out dry before you fix them. Swap tiles until no two faces with a strong grey patch sit side by side. Order a sample before you commit: screens shift white towards blue or yellow, and your own daylight is the only true test. Tiles Paradise takes the sample cost off a later tile order.
Where can you use Crystal Onyx White?
Crystal Onyx White works on every indoor wall and on dry indoor floors. Its polish is the deciding factor: shine is a strength on walls and a risk on wet floors.
| Area | Verdict | Why |
|---|---|---|
| Bathroom and shower walls | Yes | Water runs off the polish; large tiles mean fewer grout lines to clean |
| Kitchen walls and splashbacks | Yes | Wipes clean; porcelain does not stain from oil or sauces |
| Living room, dining room, bedroom floors | Yes | Dry floors are where a polished finish belongs |
| Hallway floor | With care | Needs a large doormat; wet shoes and grit are the risks |
| Kitchen floor | With care | Mop up spills straight away; a matt tile is safer in a busy family kitchen |
| Bathroom floor (outside the shower) | With care | Use a bath mat; dry the floor after bathing |
| Walk-in shower or wet-room floor | No | No stated slip rating; standing water on polish is slippery |
| Outdoors | No | Indoor polished tile; use 20mm outdoor porcelain instead |
Is Crystal Onyx White slippery on a bathroom floor?
Yes, Crystal Onyx White can be slippery when wet, like any polished porcelain. The listing gives no R or pendulum slip rating, so it should not be used where water pools. The same polished tile on the shower walls, with a matt tile on the shower floor, keeps the look and the grip.
For the shower tray area, choose a matt tile with a stated R11 rating from the non-slip floor tiles range. If you want the onyx look to carry on underfoot, the matt Alba Onyx White 60×60cm tile is a close match; ask us to confirm its slip rating before you use it in a shower. The guide to non-slip porcelain floor tiles explains the R10 and R11 thresholds.
Can Crystal Onyx White go over underfloor heating?
Yes, Crystal Onyx White is listed as suitable for underfloor heating. Thin, dense porcelain passes heat quickly, which takes the chill off a polished floor. Fix it with a flexible S1 adhesive and let a new heated screed run through a full heat-up and cool-down cycle before tiling. The porcelain floor tiles and underfloor heating guide covers warm-up rates, and the electric underfloor heating range lists the mats that sit under the tile.
How much does Crystal Onyx White cost for a real room?
Crystal Onyx White costs £24.99 per m² including VAT, which is about £36 for a box of two tiles covering 1.44m². Each tile covers 0.72m², so one square metre takes just under 1.4 tiles. Always add 10% for cuts and breakages, then round up to whole boxes. The tile calculator does this automatically.
| Project | Area + 10% | Boxes | Tile cost |
|---|---|---|---|
| Bathroom floor, 2.4m × 1.8m | 4.32m² → 4.75m² | 4 boxes (5.76m²) | £143.94 |
| Kitchen-diner floor, 5m × 4m | 20m² → 22m² | 16 boxes (23.04m²) | £575.77, or £519 as the job lot |
The kitchen-diner example lands on exactly 16 boxes, which is the same 23.04m² as the Crystal Onyx White job lot of 32 tiles. At £519, the job lot saves £56.77 against buying the same area by the square metre, and it arrives as half a pallet. Whole-floor and whole-house jobs can use the full-pallet listing at £900.
Delivery depends on the order value. Standard pallet delivery is free on orders over £499 to the UK mainland and costs £39.99 for orders between £100 and £499, usually within 2–4 working days. Order all your boxes together so every tile comes from the same batch and shade.
How does Crystal Onyx White compare with other white onyx tiles?
Crystal Onyx White sits in the middle of our white onyx range on price, with one of the coolest, cleanest whites. The tiles below are all 60×120cm porcelain, rectified and suitable for underfloor heating. They differ in tone, vein colour, finish and thickness.
| Tile | Tone and veining | Finish | Thickness | Price |
|---|---|---|---|---|
| Crystal Onyx White | Cool bright white, soft grey clouds | Polished | 9mm | £24.99 |
| Ice Onyx Pearl White | Warm, creamy pearl white | Polished | 9.5mm | £19.99 |
| Onyx White | Cool white, fine grey veins | Polished | 9.5mm | £23.99 |
| Gemstone Onyx White | Greyer white, stronger grey veining | Polished | 9mm | £19.99 |
| Ocean Onyx White | White with horizontal banding | Polished | 9mm | £21.99 |
| Persian Onyx Gold White | White with gold veins | Polished (gloss) | 9mm | £27.99 |
| Rodas Onyx White (made in Spain) | White with grey marble-style veins | Polished | 10.5mm | £34.99 |
| Alba Onyx White | Soft creamy white | Satin | 8.5mm | £24.99 |
Choose Crystal Onyx White if you want a crisp, gallery-white room with grey that matches chrome or black brassware. Choose the Ice Onyx Pearl White tile if you want a warmer room that pairs with brushed brass and wood; its full Ice Onyx Pearl White guide covers that tile in the same depth. The Onyx White polished tile is the closest alternative in tone. Every option sits together in the white onyx tiles collection.
How do you fit 60×120cm polished porcelain like Crystal Onyx White?
Fit Crystal Onyx White on a flat, rigid, dry base, with full adhesive cover and levelling clips. Large polished tiles show every height difference between edges, because the shine catches the light along any step.
- Check flatness first. Floors and walls must be flat across the full 1.2m length of the tile. Level any dips before you start.
- Back-butter every tile. Spread adhesive on the back as well as the base, so there are no hollow corners to crack later.
- Use levelling clips. They hold neighbouring edges at the same height while the adhesive sets.
- Keep offsets to one-third. A half-brick offset on 60×120cm tiles exaggerates any slight bow in the tile.
- Plan the cuts. A 120cm tile needs a long rail cutter or a wet saw, and two people to carry and place it.
- Protect the polish. Keep tape and grout off the face, and clean grout haze within the time the haze remover allows.
Rectified edges let you use a slim 2mm joint on walls for a near-seamless look; 2–3mm is common on floors. The guide to rectified porcelain tiles explains why the edges matter. For the full bathroom sequence, from tanking to silicone, follow how to tile a bathroom step by step.
What grout colour goes with Crystal Onyx White?
White or a light silver-grey grout suits Crystal Onyx White best. White grout makes the joints disappear into the tile. Light grey picks up the veining and hides everyday marks on a floor. Avoid dark grout: it draws a hard grid across a soft onyx pattern. The guide on how to grout tiles covers mixing and finishing narrow joints.
How do you clean Crystal Onyx White without streaks or scratches?
Clean Crystal Onyx White with warm water, a pH-neutral cleaner and a microfibre mop, then buff it dry. Streaks on polished porcelain usually come from too much cleaner or from letting the water dry on the surface.
- Avoid: wax, oil-based soaps, bleach-heavy sprays and abrasive pads. They dull or film the polish.
- Scratches: grit carried in on shoes causes most fine marks on polished floors. Use doormats and felt pads under chair legs.
- Sealing: porcelain does not need routine sealing. If the tile pack advises a pre-grout sealer for polished porcelain, apply it before grouting to stop grout staining the face.
- Footprints and water marks: they show more on a polished floor than on matt. A quick dry-buff removes them.
Our guide to cleaning bathroom tiles and grout covers stubborn limescale and mould on grout lines.
How do you style a room with Crystal Onyx White?
Crystal Onyx White works best with cool or high-contrast colours. Black or chrome taps, charcoal vanities and deep green or navy paint make the white look brighter. Brushed brass adds warmth but shifts the room away from the tile's cool tone.
In a small bathroom, tile floor to ceiling in the same tile, so the room reads as one bright box. Large 60×120cm tiles make a small room feel bigger because there are fewer joints to break up the walls. The guide to large format bathroom tiles shows layouts for compact rooms, and onyx bathroom design ideas show how other white and coloured onyx tiles are styled. Every onyx colour we stock for bathrooms sits in the onyx effect bathroom tiles collection. For kitchens, onyx-effect kitchen tiles covers splashbacks and worktop pairings.
Crystal Onyx White questions, answered
Is Crystal Onyx White real onyx?
No. Crystal Onyx White is porcelain with a printed and polished onyx-effect face. It contains no natural stone.
Is Crystal Onyx White polished or matt?
Crystal Onyx White is polished, with a high-gloss face. For a matt white onyx look, choose a matt or satin tile from the same colour family.
How many Crystal Onyx White tiles are in one square metre?
One square metre needs just under 1.4 tiles, because each 60×120cm tile covers 0.72m². A box of two tiles covers 1.44m².
Can you use Crystal Onyx White on a shower floor?
No. Use it on the shower walls, and choose a matt tile with a stated R11 rating for the shower floor.
Can Crystal Onyx White be used outside?
No. It is an indoor polished tile. Patios need 20mm outdoor porcelain with an R11 rating.
Is Crystal Onyx White suitable for a kitchen worktop?
No. It is a wall and floor tile, not a worktop surface. It works well as a splashback behind a worktop.
Do polished porcelain tiles like Crystal Onyx White scratch easily?
Polished porcelain is hard-wearing, but grit can leave fine marks on the shiny face over time. Doormats, felt pads and regular sweeping keep the polish looking new.
Can you tile Crystal Onyx White onto plasterboard?
Yes, if the plasterboard is sound and the total weight of tile plus adhesive stays within the board's limit, commonly quoted as 32kg per m². In wet areas, tank the board first.
Can Crystal Onyx White be laid over existing tiles?
Often, yes, if the old tiles are firmly bonded, flat and clean. Large polished tiles need a very flat base, so check the old floor with a long straight edge first.
Is Crystal Onyx White good for a small bathroom?
Yes. Its bright white and large format make small rooms look bigger. Keep the shower floor matt and use a bath mat on the polished area.
Does Crystal Onyx White need sealing?
No routine sealing is needed for porcelain. Follow any pre-grout sealing advice on the tile pack to protect the polished face during grouting.
Where can I buy Crystal Onyx White in the UK?
Crystal Onyx White is sold online by Tiles Paradise, by the square metre, as a 32-tile job lot or as a full pallet. You can view it on the Crystal Onyx White 60×120cm product page, with delivery across the UK mainland.
The Verdict on Crystal Onyx White
Crystal Onyx White is a bright, cool white onyx-effect porcelain tile that turns walls and dry floors into one luminous surface for £24.99 per m². Its strengths are the clean white, the soft grey veining and the large 60×120cm format. Its one limit is the polish: keep it off shower and wet-room floors, pair it with a matt tile where water pools, and it will do everything else the onyx look promises.