Gabbro Stone Curbing Stamp

Sell the Fractured Rock. Not the Stamp.

Gabbro is dense, dark, coarse-grained igneous rock — and this stamp captures the rough, granular break of it at a full 14 × 21 inches. It's one of the largest impressions in our lineup, which means serious coverage per press and a texture with genuine weight to it.

What Will My Finished Curb Look Like?

A coarse, gritty stone surface with irregular fracture faces and real tooth — the look of rock that was split, not cast. It reads best in cool grays and charcoals, where the coarse grain picks up antiquing release across the whole face rather than only in the joints. See the finished-project photos above.

Dimensions

14 × 21 inches — large-format single stamp.

Material

Cast polyurethane rubber, made in the USA. Flexible on a radius, firm enough to press coarse grain detail consistently pour after pour.

Who Is This For?

Landscape curbers and vertical concrete contractors who want a bold, rugged stone rather than a refined slate — and anyone covering long runs or large wall faces where a big stamp saves real labor.

How Deep Is the Texture?

Coarse and deep, with fracture relief plus fine granular texture across the surface. That combination is what makes it hold color convincingly instead of looking like textured concrete.

Is It Difficult to Use?

No special training required. Keep pressure even across the full 21 inches and use a good release agent so the coarse grain releases clean. Rotate between impressions to keep the fracture pattern from repeating.

What Else Should I Buy?

Pair with the matching Gabbro Stone Textured Trowel to carry the same texture onto vertical faces and touch-up areas, plus CurbArt joint tools and a gray or charcoal antiquing release. Stamp and trowel together let you finish curbing and wall work in one consistent texture.

Why CurbArt?

Made in the USA. No course required, no membership, no training program to complete before you can buy. Buy what you need, when you need it.

Can This Help Me Make More Money?

Yes. Bold rugged stone is a different product from a standard finish, and customers price it that way. Large-format coverage also means you're on and off the job faster, which is margin you keep.

Color of the stamp itself may vary depending on the materials used. This does not affect the texture or performance.

Free Shipping

Free shipping is included with your Gabbro Stone Curbing Stamp.