Radianz · Quartz
Columbia Grey
Full Service — Installation
Our quartz range is available with full supply, templating, fabrication and installation across Portsmouth, Fareham, Gosport, Havant, Waterlooville, Chichester, Southampton and the surrounding area, with our services extending to Hampshire, Sussex, Surrey, Dorset and Berkshire . The reach of our installation service depends on the type of project — contact us to discuss your requirements.
Supply & Fabrication — UK Wide
Outside our installation area? We can fabricate quartz to your supplied template, or supply the stone directly as-is — anywhere in the UK . Learn more .
The Stone
See the natural beauty of Columbia Grey up close — the surface texture, colour depth, and veining that make this quartz unique.
Colour:
Grey
A contemporary mid-grey quartz with fine, uniform speckling — modern versatility at its best.
Columbia Grey is a confident, modern mid-grey quartz with a dense, fine-grained speckled texture that reads as clean and consistent across the entire slab. Small darker charcoal and near-black particles are tightly packed against the grey ground, creating a subtle visual depth without any distracting veining or pattern direction. The effect is industrial and refined — reminiscent of polished concrete but with the warmth and smoothness that only engineered quartz delivers. Part of the Radianz Classic collection and one of the brand's most popular on-sale options through Cullifords, Columbia Grey is available in jumbo XL slabs (330 × 165cm) for seamless large installations. The 93% quartz composition produces a surface that is non-porous, fully stain-resistant, and rated Mohs 7 for hardness. Backed by LOTTE Chemical's 15-year residential warranty, this surface suits modern kitchens, utility rooms, and commercial counters where a neutral, hardwearing grey is needed.
Available Finishes
Ideal For
Performance
How This Stone Performs
Hardness
7 out of 5
Stain Resistance
5 out of 5
UV Resistance
2 out of 5
Heat Resistance
3 out of 5
Scratch Resistance
5 out of 5
Interested in Columbia Grey?
Love this stone?
Get a free, no-obligation quote for Columbia Grey quartz. From template to installation, In2stone handles everything — so you can enjoy your new surface without the stress.
Frequently Asked
Questions About Columbia Grey
Does Columbia Grey have a concrete-like appearance?
Is Columbia Grey currently discounted through the UK supplier?
Will the dark speckling in Columbia Grey hide scratches and everyday wear?
Can Columbia Grey be paired with white marble-look surfaces in the same kitchen?
What slab sizes are available for Columbia Grey?
"Excellent Service and Beautiful Results - Highly Recommended! I recently had In2stone install new quartz worktops in my kitchen, and I couldn't be happier with the results. From start to finish, the experience was completely stress-free. The team was not only competitively priced but also incredibly friendly and professional throughout the entire process. They handled everything seamlessly - removing the existing sink, hob, and old laminate worktops before fitting the new quartz surfaces. The finished worktops are absolutely beautiful and have transformed my kitchen into a modern, minimalist space that I love spending time in. The quality of workmanship is outstanding, and the attention to detail really shows. I'm a very satisfied customer and would highly recommend In2stone to anyone considering new worktops. Well done to the entire team - you've exceeded my expectations!"— Ashley ChapmanGoogle Review
Why Choose Us
Why In2stone
Invisible Joins & Ogee Edging
The edge profiles and seamless joins other suppliers say they can't do? We do them every week.
"Other quartz suppliers weren't able to offer the ogee edging I wanted — In2stone could."
Olivia Tett
The Quote Is the Price
No hidden costs, no surprises. We consistently beat competitor quotes — even online discounters decline to match us.
"Beat 6 other companies by a mile. Even an online company that claims to beat any quote declined to."
Dean Fitzpatrick
Ian Answers the Phone
No answering machines or sales scripts. You'll speak to the people who'll actually work on your project.
"Ian always answered the phone or called me back — and that was before we even decided to use him."
Carly Rielly
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