Metis Maison Lighting Materials and Finishes: SUS316, Brass, Bronze, Crystal, Alabaster

If you searched for metis maison lighting, you are looking for a decorative lighting manufacturer: Metis Maison makes bespoke chandeliers, wall sconces, table lamps and pendants for hotels and other hospitality interiors. It is a different company from Metis Homes, the UK housebuilder. This guide is for lighting designers and FF&E specifiers who need to know what each material and finish on a Metis Maison fixture actually is, where it tends to be the right choice, and what to write into the specification so the approved sample and the delivered fixture match.

Passages marked as general guidance describe standard material behaviour, not Metis Maison test results; everything attributed to Metis Maison reflects what the company publishes about its own materials and process.

What materials does Metis Maison Lighting work with?

The company's published palette covers four groups: structural metals (SUS304 and SUS316 stainless steel, brass, bronze and aluminium), light-transmitting materials (K9 and K5 crystal, hand-blown glass, alabaster and acrylic), soft materials (fabric shades) and a finish list that runs from hand-rubbed bronze to PVD. The table summarises each option, where it is commonly used, and what to pin down before sign-off.

Stainless steel: when SUS316 is worth specifying over SUS304

As general guidance, SUS304 and SUS316 are both austenitic stainless steels. The practical difference is that 316 contains molybdenum, typically around 2 to 3 percent, which improves resistance to pitting from chlorides. Chlorides come from sea air, pool water, spa treatments and some cleaning products. In a dry lobby, 304 generally performs well; by the sea, around a pool or in a spa, 316 is the safer specification, because pitting shows first on polished surfaces.

Metis Maison lists SUS304 and SUS316 as marine-grade options with wall thicknesses of 1.5 to 3 mm, and specifies fasteners to ISO 898 grade 8.8 as a minimum, with A4-80 stainless fasteners for coastal sites. A4 is the ISO designation for the 316 family of stainless fasteners, so on a coastal job the bolts match the steel they hold. Mill sheets for steel are available on request.

Brass and bronze: what is in the metal and what is on it

Metis Maison builds its chandelier bodies from solid brass and copper tube stock, TIG-welded by hand and ground flush until the seam cannot be found by fingertip. The colour on these bodies is a chemical patina worked into the metal and sealed under microcrystalline wax rather than lacquer, so the surface can be re-rubbed by hand rather than replaced. Antique and aged brass effects are produced as custom patinas, not as separate stock finishes.

The word bronze needs care on any schedule. Metallurgically, bronze is a copper alloy in its own right, and the company lists it as a material. Hand-rubbed bronze, though, is a finish: the company describes it as a patina built on brass and copper. A schedule that just says bronze leaves the question open; antique, aged and vintage brass likewise name a colour, not a material. Metis Maison publishes the wording it suggests buyers send to any supplier; for each part of the fixture, ask for:

• Whether the body, arms, canopy, backplate, bobeches and visible hardware are solid brass, brass-plated or another material.
• For any plated part, the base metal and the plating thickness in microns.
• Whether the finish colour is a chemical patina on the metal itself or a coating applied over it.
• Whether the sealer is a lacquer or a wax.
• A 50 × 50 mm finish chip produced on the same base metal as the production part.

Mixed construction is normal and honest: a solid brass body with plated steel hardware is a sound way to build a fixture. What matters is that the answer is in writing and filed with the project. On a sample, a magnet and the weight in the hand are useful first checks: brass is non-magnetic and runs around 8.5 g/cm³ on published constants, against roughly 6.6 for die-cast zinc alloy.

How Metis Maison builds a hand-rubbed bronze finish

The company documents a five-stage sequence for its hand-rubbed bronze:

• Hand-welding: solid brass and copper tube stock is TIG-welded, and each seam is ground flush, first with a belt grinder and then by hand with progressively finer abrasives.
• Preparation: the body is ultrasonically cleaned and hand-wiped to remove oil, flux and finger residue, then handled only with lint-free gloves.
• Chemical patination: solutions including liver of sulphur, ammonium chloride and custom blends are applied by brush and cloth, darkening the recesses first.
• Hand-rubbing: steel wool and a light wax lift colour from edges and corners where natural wear would occur.
• Sealing: two coats of clear microcrystalline wax are buffed by hand and cured for 24 hours before electrical assembly.

For a specifier, the consequence is about maintenance as much as appearance. A patina is part of the metal, so wear exposes more brass and the surface can be locally re-rubbed on site with the same steel wool and wax. A plated surface cannot be spot-repaired once the base metal shows. On one hotel project, the company paired hand-rubbed bronze ballroom pendants with hand-blown glass diffusers, while the restaurant's sconces and table lamps used a custom aged-brass patina tuned to the interior designer's palette.

Polished chrome, PVD and powder coat: applied finishes

As general guidance, these three finishes sit on top of the metal rather than changing it. Polished chrome is electroplated from a liquid bath, and like all electroplate it is thinnest where the geometry is sharpest. PVD (physical vapour deposition) is applied in a vacuum chamber as a very thin, hard film; it is generally more abrasion-resistant than decorative electroplating. Powder coat is a dry powder applied electrostatically and baked, giving matt, satin or coloured finishes, most often on steel and aluminium.

Metis Maison lists polished chrome, PVD and powder coat alongside its patinas, and states that all of its plating is RoHS-compliant. The company is open about where plating is the right call: parts mounted out of reach never meet a hand or a cloth, short-life installations such as sales galleries and show flats do not need twenty years, and on large arrays where cost per piece governs, plating over a die-casting is often what makes the scheme buildable.

Crystal and glass: K9, K5 and hand-blown

Metis Maison works with K9 and K5 crystal and describes its K9 as hand-cut optical crystal. As general guidance, K9 and K5 are Chinese optical-glass grade designations, and K9 is the grade most often used for chandelier prisms and drops because of its clarity and the way it takes a polished facet. What to approve is the cut, the clarity of a sample piece under the project's colour temperature, and the cleanliness standard on delivery.

Hand-blown glass is a different brief. Each piece is formed by a glassblower, so small variations in wall thickness and tint, and the occasional seed (a tiny bubble), are part of the material rather than defects. Agree the accepted range on the prototype. For shipping, the company packs glass and crystal parts in individual sleeves inside foam-cradled crates with silica-gel desiccant and a humidity indicator card, in ISPM-15 compliant outer cases.

Alabaster, fabric shades and acrylic

Alabaster appears in the company's 2026 collection, which includes 30 new wall sconce references in brass, bronze and alabaster. As general guidance, alabaster is a soft, translucent natural stone that diffuses light warmly and shows veining that varies from block to block. It is softer and more porous than marble, so it suits dry interior positions away from splashing water and is best cleaned with a dry or barely damp cloth rather than chemical cleaners.

Fabric shades are standard on table lamps, floor lamps and guestroom sconces; the specification should name the fabric and colour and state the flame-retardancy requirement for the destination market. Acrylic is lighter and less prone to breakage than glass, which makes it useful for large diffusers or high positions, but as general guidance it can discolour if placed too close to a heat source, so check the distance from the light source on the drawing.

How finishes are sampled and approved

Metis Maison sends finish chip sets at 50 × 50 mm, plus small material samples, by DHL at cost. For larger architectural finishes it ships an A4 sample panel. The sample cost is refundable against a confirmed order above USD 5,000. Combined with the company's published process, the approval route runs:

• Concept moodboard: the designer's concept translated into a material palette, finish swatches and reference imagery, signed off before any drawing starts.
• Finish chips and panels: compared under the project's lighting and kept as control samples.
• CAD and shop drawings: materials and finishes called out part by part.
• 1:1 physical prototype: every bespoke design is approved for finish, proportion and optics on a full-size piece.
• Largest fixture first: for hospitality projects, a full-scale sample of the largest fixture in the package is signed off by the designer and owner before production tooling is released.
• Production: checked against the signed samples, with polishing and assembly in the company's own facilities.

What to write into a Metis Maison lighting specification

A short checklist removes most of the ambiguity before the first chip is cut:

• Material per part, including stainless grade (SUS304 or SUS316) and fastener class.
• Solid or plated for every brass part, with base metal and plating thickness where plated.
• Finish name plus a signed chip or panel reference, and whether it is a patina, plating, PVD or powder coat.
• Sealer type: wax or lacquer.
• Accepted range for natural and hand-made materials.
• Crystal grade and cut, glass tint, and alabaster positions away from wet zones.
• Documentation: mill sheets for steel, brass and crystal on request, and model-specific test reports once the project is confirmed.

Finish choice also feeds into the warranty conversation. Metis Maison states a five-year warranty on the fixture body, plating and LED modules and two years on drivers and electrical components, honoured through the company or a designated local agent. RoHS 2.0 is model-tested, and the RoHS, CE-LVD, UL and ETL certificates are held by the company's audited partner factory, with original PDFs released under NDA.