Harmonic/Development

Ancient technique, cast for modern living

Harmonic Development designs and casts geopolymer stone: from architectural pieces for the home, to small sacred structures, to building systems at scale.

Applications

From seawalls to walls that store power.

Geopolymer thrives where conventional concrete fails, and it opens technologies concrete never could.

Cast stone seawall with flowing relief patterns, mussels and fish below the waterline
Coastal defense01 / 05 · Concept render
Three scales
Objects

Architectural pieces

Cast-stone features for the home and garden, made to order in real geopolymer stone.

First pieces in development
Commission a piece
Cast stone light stele glowing at dusk
Concept render
Sconces & harmonic lighting
Dark cast stone outdoor kitchen with sculpted sink
Concept render
Stone countertops & kitchens
Faceted cast stone accent chair and side table beside a lotus pool
Concept render1 / 2
Sculptural accent chairs
Dark cast stone lounge chairs around a fire pit
Concept render
Fireplaces & conversation pits
Monolithic stone table in a garden
Concept render
Stone tables & daybeds
Structures

Small sacred structures

Spaces shaped for stillness, sound and ceremony, and large outdoor works that move with light and sound.

By commission
Start a project
Sunken ceremonial circle with cast relief walls under an oak
Concept render
Ceremonial circles
Resonant chamber shell in a forest beside a stream
Concept render
Meditation & resonant chambers
Dark cast stone sculpture at night
Concept render
Sound, light & motion sculpture
Flowing cast stone figurative sculpture
Concept render
Figurative sculpture
Cast stone arched gateway with stone sconces
Concept render
Gateways & thresholds
Systems

Building at scale

Geopolymer building systems with development partners, for homes and communities.

Partnerships in formation
Partner with us
Precast geopolymer wall panels: curved, arched window and relief panel, with a panel-built dome behind
Concept render
Precast panels for tiny homes
Pneumatic-cast tiny home with arched shell
Concept render
Casting on pneumatic forms
Cast stone amphitheater and colonnade in a hillside landscape
Concept render
Larger structures
In development
Pair of cast stone wall sconces beside a bronze door
Concept render
Object · LightingConcept

Harmonic Sconce

A tall cast-stone wall light with stepped facets and channels that wash warm light up and down the wall.

Material
Geopolymer stone
Finish
Honed, natural
Status
Concept
Dark cast stone outdoor kitchen
Concept render
Object · InteriorConcept

Stone Countertop

Monolithic countertops and outdoor kitchens with sculpted, integrated sinks and basins.

Material
Geopolymer stone
Process
Cast to template
Status
Concept
Faceted cast stone accent chair and side table
Concept render
Object · SeatingConcept

Lotus Throne Collection

Faceted accent chairs with spired, relief-carved backs and three finials: spire, ring and lotus.

Material
Geopolymer stone
Pieces
Chairs, side table
Status
Concept
Capabilities
Formulation

Custom geopolymer mixes tuned for strength, finish and colour.

Mold-making

Molds and forms for one-off pieces and repeat production.

Casting & finishing

Casting, curing and hand-finishing in the workshop.

Consulting

Guidance for architects and builders working with geopolymers.

Process
  1. 01Consult

    We learn what you want to make and where it will live.

  2. 02Design

    Drawings, samples and a mix chosen for the piece.

  3. 03Cast

    The piece is cast, cured and finished.

  4. 04Install

    Delivered and installed, or handed to your builder.

Why geopolymer

The same chemistry as the walls of Cusco

Our research into ancient cast stone informs every piece we make. Geopolymers set at ambient temperature into a dense, stone-like material.

See the research
  • Stone-likeDense, durable and natural in look and touch.
  • Fire-resistantStable at high temperatures, suited to fireplaces.
  • Lower carbonMade without the high-temperature kilns of Portland cement.
  • Cast, not quarriedFormed to any shape without cutting stone.
Enquire

Tell us what you want to build

Commissions, projects and partnerships. Tell us a little about it and we'll be in touch.