Sitzstein HM – Sculptural Object for Architecture & Space

The Sitzstein HM by Atelier Vierkant is a sculptural seating object made of handcrafted ceramic.
Solid, serene, and architecturally conceived, it combines function with timeless form.
Suitable for interiors, gardens, and public architecture.

The Sitzstein HM is not a classic piece of furniture, but an architectural object with a functional claim.
Its organic shape, high inherent weight, and calm surface structure give it an extraordinary presence in any space.

Each HM is handcrafted in Belgium from solid ceramic and fired multiple times. This makes it extremely robust, weather-resistant, and designed for permanent use both indoors and outdoors.

Whether as seating, a sculptural accent, or part of an architectural design – the Sitzstein HM naturally integrates into private gardens, living spaces, as well as public and commercial projects.

• HM65
• 65x52x97x48cm / 90kg
• HM90
• 88x52x119x49cm / 110kg

• Shape: organic
• Material: clay/ceramic
• Features:frost-proof seating stone

Color and texture can be chosen from the Atelier-Vierkant color chart (9 solid clay colors, engobe top colors, and textures T0–T16).

• Colors & Structure
• Seating Stone HM – Detailed product information
• Atelier Vierkant Manual for Planting, Fastening & Care of Your Planters