Marcus Bernardes with an argillite artwork

Brazilian geological art · Minas Gerais

What the earth concealed,
the hand reveals.

One-of-a-kind argillite works shaped through more than two decades of geological research, experimentation and exacting handwork.

Marcus Bernardes / Brazil

01 — Manifesto

Matter carrying
millions of years.

Marcus Bernardes transforms argillite fragments into singular objects whose colour, fracture and geological memory can never be reproduced.

Read the artist’s story ↗
Field research in Minas Gerais

02 — Origin

A scientific eye. An artist’s intuition.

The son of a geographer and an architect, Marcus trained as a psychologist and earned a master’s degree in Behavioral Science. His practice brings research, observation and material experimentation into dialogue with an instinctive approach to form.

Marcus Bernardes holding a raw argillite slab

03 — Collection

One-of-one works

35 works

Ígnea I

Series Ígnea · MB-2026-001

US$ 7,600Unique work

Granular XII

Series Granular · MB-2026-002

US$ 2,850Unique work

Fragmenta V

Series Fragmenta · MB-2026-003

US$ 2,250Unique work

Metaclastos V

Series Metaclastos · MB-2026-004

US$ 2,250Unique work

Mosaico III

Series Mosaico · MB-2026-005

US$ 2,100Unique work

La Belle II

Series La Belle · MB-2026-006

US$ 2,700Unique work

Metaclastos VI

Series Metaclastos · MB-2026-007

US$ 2,900Unique work

Metaclastos VII

Series Metaclastos · MB-2026-008

US$ 2,850Unique work

Metaclastos VIII

Series Metaclastos · MB-2026-009

US$ 2,650Unique work

Metaclastos IX

Series Metaclastos · MB-2026-010

US$ 2,100Unique work

Metaclastos X

Series Metaclastos · MB-2026-011

US$ 1,900Unique work

Endoformas II

Series Endoformas · MB-2026-012

US$ 3,300Unique work

Metaclastos XI

Series Metaclastos · MB-2026-013

US$ 1,200Unique work

Pirita Globular II

Series Pirita Globular · MB-2026-014

US$ 1,800Unique work

Fragmenta II

Series Fragmenta · MB-2026-015

US$ 3,000Unique work

Pirita Globular I

Series Pirita Globular · MB-2026-016

US$ 2,700Unique work

Metaclastos II

Series Metaclastos · MB-2026-017

US$ 1,800Unique work

Polícroma II

Series Polícroma · MB-2026-018

US$ 1,380Unique work

Metaclastos XII

Series Metaclastos · MB-2026-019

US$ 1,950Unique work

Mosaico I

Series Mosaico · MB-2026-020

US$ 2,300Unique work

Metaclastos XIII

Series Metaclastos · MB-2026-021

US$ 3,400Unique work

Metaclastos XIV · A

Series Metaclastos · MB-2026-022

US$ 2,700Unique work

Metaclastos XV

Series Metaclastos · MB-2026-023

US$ 2,550Unique work

Variegata I

Series Variegata · MB-2026-024

US$ 3,600Unique work

Aurea I

Series Aurea · MB-2026-025

US$ 3,300Unique work

Metaclastos XVI

Series Metaclastos · MB-2026-026

US$ 3,400Unique work

Metaclastos XVII

Series Metaclastos · MB-2026-027

US$ 3,100Unique work

Metaclastos XVIII

Series Metaclastos · MB-2026-028

US$ 1,900Unique work

Limonita I

Series Limonita · MB-2026-029

US$ 1,900Unique work

Metaclastos XIV · B

Series Metaclastos · MB-2026-030

US$ 2,900Unique work

Polícroma III

Series Polícroma · MB-2026-031

US$ 11,700Unique work

Variegata II

Series Variegata · MB-2026-032

US$ 9,600Unique work

Lateritas I

Series Lateritas · MB-2026-033

US$ 1,800Unique work

Lateritas II

Series Lateritas · MB-2026-034

US$ 2,300Unique work

Lateritas I · Esfera

Series Lateritas · MB-2026-035

US$ 1,600Unique work
Argillite strata

04 — Argillite

Before form,
there is stone.

Argillite originates from clay particles deposited in ancient rivers, lakes and oceans. Pressure, time and mineral variation created the colours and textures that each work now brings to the surface.

2003First encounter23Years of research1/1Irreplaceable composition

05 — The Fragment Joining Technique

Fracture becomes
continuity.

Field researchRaw argillite
  1. 01

    Field research

    Geological literature, satellite imagery and expeditions guide the study of distinct outcrops and mineral patterns.

  2. 02

    Selection

    Fragments are chosen for colour, texture, hardness and their place within a larger composition.

  3. 03

    Fragmentation

    Matter is separated into multiple scales, from powder to visible geological inclusions.

  4. 04

    Joining with water

    Water reunites particles and fragments into a multicoloured body that can be shaped by hand.

  5. 05

    Modelling and drying

    Intention meets the behaviour of stone; asymmetry and organic continuity emerge through this negotiation.

  6. 06

    Treatment and polishing

    After drying, each work is treated and polished to reveal structural and chromatic depth.

“The work does not impose a skin upon the stone. It gives the stone the conditions to reveal its own interior landscape.”

Marcus Bernardes
Marcus Bernardes

06 — The artist

From scientific inquiry
to a language of stone.

Marcus Bernardes Guadalupe is a Brazilian artist, psychologist and researcher with a master’s degree in Behavioral Science. His relationship with argillite began in 2003, at seventeen, during fieldwork coordinated by his mother near Lagoa da Prata.

A freshly broken fragment—locally known as “giz”—revealed unexpected reds, purples and yellows. When washed, its colour intensified and its surface responded to hand shaping. That encounter initiated a material investigation spanning more than twenty-three years.

From early carved pebbles to resin experiments in Brasília and extensive field research in Minas Gerais, each technical limitation became a new inquiry. In 2020, accidental exposure to rain led to the Fragment Joining Technique: water, powder and fragments of different argillites could be recombined into entirely new mineral bodies.

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Marcus Bernardes with his work
Curiosity became method; geological matter became language.

A practice built over time

2003

First encounter with coloured argillite

2016

Resin research addresses material fragility

2018

New outcrops studied through geology and satellite imagery

2020

The Fragment Joining Technique is developed

2026

A mature collection shaped by 23 years of investigation

Private collecting

For collectors who seek
what cannot be repeated.

Each work is a singular encounter between geological time and the artist’s hand. Private acquisition, insured international shipping, curatorial selections and projects for exceptional interiors are handled directly by the studio.

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