In2stone
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Cosmic Black Granite

Granite

Cosmic Black

25+ Years Experience
1,500+ Projects Completed
4.9 from 100+ Reviews
Free No-Obligation Quote

Full Service — Installation

Our granite 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 granite to your supplied template, or supply the stone directly as-is — anywhere in the UK . Learn more .

The Stone

See the natural beauty of Cosmic Black up close — the surface texture, colour depth, and veining that make this granite unique.

A deeply dramatic Indian granite, where bold sweeping veins of silver-white and warm cream cut across a rich black surface, creating a truly cosmic spectacle.

Cosmic Black granite is a spectacular natural stone, captivating with its deeply dramatic aesthetic. We see a rich, intense black base, across which bold, sweeping veins and dynamic swirls of silver-white and warm cream mineral formations flow with powerful, organic movement. This striking diagonal current creates an exceptional sense of depth and contrast, evoking a cosmic, almost galactic quality. The polished finish further amplifies its intense, dynamic character, making every slab a commanding work of art.

This extraordinary granite hails from the ancient geological heart of India, where it was forged deep within the Earth's crust over millions of years. As silica-rich magma cooled slowly under immense pressure, large interlocking crystals of quartz, feldspar, and mica formed, giving Cosmic Black its characteristic coarse-grained, crystalline texture. The unique mineral composition and the dynamic forces during its formation are responsible for the stunning black backdrop and the mesmerising lighter veins, a true testament to nature's artistry.

Cosmic Black granite, with its inherent hardness (Mohs 6-7) and low porosity, is an outstanding choice for kitchen worktops, bathroom vanities, and feature walls. We understand that a worktop isn't just a surface; it's the heart of your home. That's why we passionately hand-template each project, ensuring these dramatic veins are perfectly aligned and every edge is meticulously crafted. With proper sealing and simple daily care, Cosmic Black offers exceptional resistance to heat, scratches, and stains, delivering not just a luxurious result but a truly honest and enduring investment for your home. We're here to guide you, from selection to installation, with unwavering care and craftsmanship.

Performance

How This Stone Performs

Hardness

4 out of 5

Stain Resistance

3 out of 5

UV Resistance

5 out of 5

Heat Resistance

5 out of 5

Scratch Resistance

4 out of 5

Interested in Cosmic Black?

Love this stone?

Get a free, no-obligation quote for Cosmic Black granite. From template to installation, In2stone handles everything — so you can enjoy your new surface without the stress.

Cosmic Black Granite slab

Frequently Asked

Questions About Cosmic Black

What gives Cosmic Black granite its unique appearance?
Cosmic Black granite features a rich black base dramatically contrasted by bold, sweeping veins and swirls of silver-white and warm cream minerals. These formations flow diagonally across the surface, creating an exceptional sense of depth and a captivating "cosmic" or "galactic" effect, especially with its polished finish.
What kitchen styles would best suit Cosmic Black granite?
Its intense, dynamic character makes Cosmic Black ideal for contemporary and luxury kitchen designs. It pairs beautifully with minimalist cabinetry to allow the stone to be the focal point, or with contrasting materials like natural wood or industrial metals for a sophisticated, bold statement.
How durable is Cosmic Black granite, and what care does it require?
As a granite, Cosmic Black is exceptionally durable, scoring 6-7 on the Mohs hardness scale. It's highly resistant to scratches, heat, and UV light. While naturally low in porosity, we always recommend sealing it upon installation and resealing periodically to enhance its stain resistance. Daily cleaning with mild soap and water is sufficient for maintenance.
Where does Cosmic Black granite originate from?
Cosmic Black granite is quarried from the ancient geological formations found in India. This region is renowned for producing a variety of high-quality granites, formed millions of years ago through the slow cooling and crystallisation of magma deep within the Earth's crust.
How does Cosmic Black compare to other black granites like Absolute Black?
While Absolute Black offers a uniform, pure jet-black aesthetic, Cosmic Black stands apart with its striking white and cream veining that creates dynamic movement. If you're looking for a dramatic centrepiece with intense visual character and natural artistry, Cosmic Black is an excellent choice, whereas Absolute Black provides a sleek, uninterrupted expanse. Our honest pricing reflects the unique appeal and geological artistry of each slab.
★★★★★
"We decided to get bespoke granite work tops for our new kitchen and have to say that we are over the moon with them. From the outset, Ian was very professional when selecting the stone, he listened to what we wanted, went through all of the possibilities that we could have for our worktops and went through the process in detail once we had made a decision. The templateing and fitting was carried out by an incredibly professional and helpful team run by Kev, who knew exactly what they were doing and just got on and made my kitchen look amazing. I would highly recommend In2stone for a helpful, knowledgeable and professional service from start to finish."
— Nicky HavardGoogle 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