
Diaphan Studio was founded in 2019 by Alessandro Giacomelli and Dominique Wolniewicz, a gemologist and a lighting designer united by a shared fascination with how light behaves as it moves through, or reflects off, the materials it meets. For Diaphan, the true design is the pattern of light a piece creates — the object itself is its instrument. Yet each piece is conceived as a sculpture in its own right: by day it continues to engage with natural light, its form and materiality alone shaping the space around it. This duality runs through every collection. Alessandro's training as a GIA-certified gemologist informs the studio's reading of crystalline structure — the internal geometries that determine how a stone catches, splits and releases light — while Dominique's background in lighting design shapes how that same principle is staged in space. Together, they work across two material languages: the reflective precision of solid brass, and the optical complexity of natural transparent and translucent volumes, each selected for its behaviour under light rather than its appearance at rest. This research has been presented at Alcova during Milan Design Week, Design Miami, and Salon Art+Design New York, and continues through private commissions for collectors and designers worldwide. The studio's name draws from the Greek diaphanēs, to shine through, and the English diaphanous: fine enough in texture to let light pass.

Every piece begins as a question about how light should move, then resolves into a physical object. Solid brass is chosen for what it can do: its durability, its ability to be mirror-polished to the precise reflectivity each design requires, and its responsiveness to brushing, patination and hammering — finishes drawn from Mid-century Italian design and reinterpreted for the studio's contemporary language. Components are CNC-milled or shaped from industrial extrusions, then handed to a small group of brass workers whose soldering is, by design, invisible — essential when the form depends on pure geometry and sharp, unbroken edges. Transparent and translucent materials enter the work for a different reason: their optical behaviour. Natural stones are chosen for effects no engineered material reproduces — calcite's double refraction, for instance, splits a single ray of light into two as it passes through. The studio favours raw, uncut minerals over faceted forms wherever possible, since their natural growth patterns are themselves a reference point for the geometry of the collections. Where faceting or surface treatment is used, it is to direct light in more deliberate, calculated ways. In every case, the question is the same: how does adding this material change the way light moves through the space around it. Alongside the collection, Diaphan develops site-specific installations and architectural lighting for high-end residential and hospitality projects — work that draws on the same research but is built to the scale and constraints of a specific space. The studio welcomes projects at any point on that spectrum, from a single collectible piece to a fully custom installation.

Miami Design Exhibition
December 2025
Winner - Wall Sconces
November 2025
Dark Times, Bright Signs
October 2025
Delvis (Un)Limited group exhibition
September 2025
Dark Times, Bright Signs
September 2025
Harmonious Proportions @ Tuleste Gallery
May 2025
NYC x Design exhibition
May 2023
MDW young designers
June 2023
SaloneSatellite exhibition
April 2023
Editorial
March 2022
Contemporary Cluster exhibition
September 2021