Carnet is a Hong Kong-based haute joaillerie house founded in 2001 by designer Michelle Ong, widely regarded as one of the most significant jewellery designers to emerge from Asia in the twenty-first century. Operating at the uppermost tier of the international jewellery market, Carnet is distinguished by its sculptural, nature-inspired vocabulary, its rigorous approach to gemstone selection — with a pronounced preference for Burmese rubies, Kashmir sapphires, Colombian emeralds, and fine jadeite — and by its pioneering use of titanium as a structural and aesthetic material. The house has exhibited at the Biennale des Antiquaires in Paris, is represented in distinguished private collections across Asia, Europe, and North America, and commands prices that place it in direct comparison with the foremost European maisons. Carnet is, in the fullest sense, a house of ideas: each piece is conceived as a wearable sculpture rather than a vehicle for the display of stones alone.

Founding and Context

Michelle Ong established Carnet at a moment when Hong Kong's position as a global centre for the gem and jewellery trade was well consolidated, yet the city had produced few designer jewellery houses with an internationally recognised creative identity of their own. The dominant model in the region remained either large commercial retail groups or the family-run workshop supplying stones and settings to the broader trade. Ong's ambition was of a different order: to create a house whose work would be judged on the same terms as Cartier, Van Cleef & Arpels, or JAR, and whose aesthetic would be unmistakably its own.

The name Carnet — French for notebook or sketchbook — signals the centrality of the design process to the house's identity. Every piece originates in drawing, in the accumulation of observed natural forms, and in a sustained dialogue between the designer's vision and the particular qualities of the stones assembled for a given commission or collection. This emphasis on the design object, rather than on the gemstone as a commodity, has been consistent throughout the house's history.

Design Philosophy and Aesthetic Language

Carnet's aesthetic is rooted in the natural world — in botanical forms, in the movement of water and light, in the structural logic of shells, feathers, and foliage — but it is never merely decorative or illustrative. Ong approaches these sources as an architect might: abstracting, distilling, and reconfiguring them into forms that carry emotional and intellectual weight. The result is jewellery that reads as sculpture when removed from the body and as a living, kinetic presence when worn.

Several recurring formal preoccupations define the Carnet body of work. The first is a fascination with transparency and the layering of materials: titanium frameworks, often worked to extraordinary fineness, create open lattices through which stones and light interact in ways that a solid gold setting would preclude. The second is an interest in movement — articulated elements, swinging drops, and flexible pavé surfaces that respond to the wearer's motion. The third is a sensitivity to colour relationships that goes beyond conventional complementary pairings, drawing instead on the kind of chromatic intelligence more commonly associated with painting or textile design.

Ong has spoken in interviews of the influence of Chinese art and craft traditions on her sensibility — the scholar's rock, the carved jade object, the ink painting's economy of means — though these references are absorbed rather than quoted. Carnet pieces do not deploy Chinese iconography in any literal sense; the connection is one of underlying values: the primacy of material quality, the appreciation of natural irregularity, the preference for restraint over ostentation.

Materials and Gemstone Selection

The gemstone standards maintained by Carnet are exceptional by any measure. The house sources coloured stones with the same rigour applied by the great European maisons, and the provenance of key stones is a significant element of each major piece's identity. Burmese rubies of the finest quality — those exhibiting the deep, fluorescent red historically described in the trade as pigeon's blood, from the Mogok Valley — appear with notable frequency in Carnet's most important works. Kashmir sapphires, prized for their velvety, cornflower-blue colour and their extreme rarity in the current market, are similarly favoured. Colombian emeralds, particularly those from the Muzo and Chivor mines, feature in pieces where the designer seeks the particular warm, slightly yellowish green that distinguishes the finest Colombian material from other origins.

Jadeite occupies a special position in the Carnet vocabulary. As a material with deep cultural resonance in Chinese tradition and with a colour range — from the translucent, intensely saturated green of imperial jade to the lavender, white, and mottled varieties — that is unlike any other gemstone, jadeite offers Ong a direct connection to the aesthetic world in which she was formed. Carnet jadeite pieces are typically set in ways that honour the material's own internal structure and colour distribution rather than imposing an external formal logic upon it.

Beyond these headline materials, Carnet works extensively with alexandrite, spinel, paraíba tourmaline, and a range of rare collector's stones — demantoid garnet, padparadscha sapphire, and fine cat's-eye chrysoberyl among them — selected for their individual character rather than their category. The house does not work to a formula of stone substitution; each piece is conceived around specific, irreplaceable stones.

The Use of Titanium

One of the most technically distinctive aspects of Carnet's practice is the extensive use of titanium in its settings and structural frameworks. Titanium is approximately half the density of gold, which allows the construction of large, architecturally ambitious pieces that remain comfortable to wear. It is also exceptionally strong, permitting the creation of extremely fine structural elements — threads and ribs of metal that would be fragile in gold — and it can be anodised to produce a range of colours, from pale gold through blue and violet to near-black, without the addition of other materials.

The adoption of titanium in haute joaillerie is not unique to Carnet — the material was explored by a number of avant-garde designers from the 1970s onward — but few houses have integrated it so thoroughly into a coherent design language. In Carnet pieces, titanium is not deployed as a novelty or a statement of technical virtuosity for its own sake; it is chosen because it makes possible forms and effects that no other material can achieve. The visual lightness of a Carnet piece — the sense that a large brooch or necklace is somehow hovering rather than sitting upon the body — is in large part a consequence of this material intelligence.

Craft and Production

Carnet pieces are made in extremely limited numbers, with the most important works produced as unique pieces or in editions of one. The house works with a small number of highly skilled craftspeople, and the production process is characterised by the same attention to detail that distinguishes the finest European ateliers. Setting, in particular, is treated as a creative act rather than a technical necessity: the manner in which a stone is held — the profile of the collet, the angle of the prongs, the relationship between the metal and the girdle of the stone — is considered as carefully as any other element of the design.

The time required to complete a significant Carnet piece is considerable. Complex sculptural works may require hundreds of hours of bench work, and the process of assembling the right stones for a given design — particularly when the brief calls for matched Burmese rubies or a suite of Kashmir sapphires — may extend over months or years. This is not unusual at the highest level of the jewellery trade, but it is worth noting in the context of a house that has maintained these standards consistently since its founding.

International Recognition and Exhibition

Carnet's participation in the Biennale des Antiquaires — the prestigious Paris exhibition held biennially at the Grand Palais and regarded as the most important showcase for haute joaillerie and antique objects of art in the world — placed the house in direct company with the leading European maisons and established its international credentials beyond the Asian market. The Biennale's selection process is rigorous, and inclusion is itself a form of critical recognition.

The house has also been the subject of sustained attention from the international jewellery press and from auction houses, where individual Carnet pieces have appeared and achieved prices consistent with the house's positioning at the top of the market. Major museums and cultural institutions in Asia have featured Carnet's work in exhibitions addressing the history and contemporary practice of jewellery design.

Michelle Ong herself has received numerous awards and recognitions, and her standing in the international jewellery community is reflected in her participation in high-level industry bodies and her representation in significant private collections. She is frequently cited alongside Joel Arthur Rosenthal (JAR) and a small number of other independent designer-jewellers as an example of what is possible when a single creative intelligence is given full control over the design and production process.

Market Position and Collecting

Carnet occupies a market position that is genuinely comparable to the top tier of European haute joaillerie. Prices for significant pieces — a major ruby and diamond necklace, a large jadeite and titanium brooch, a Kashmir sapphire suite — are in the range associated with important works by Cartier, Bulgari, or Van Cleef & Arpels, and in some cases exceed them when the quality of the stones is exceptional.

The collector base for Carnet is international, though it is particularly strong in Asia, where the house's combination of European craft values and an aesthetic sensibility rooted in Chinese and broader Asian visual culture resonates with collectors who may find the iconography of the European maisons less personally meaningful. There is also a significant collecting community in Europe and North America, where Carnet is valued precisely for the distinctiveness of its voice — for offering something that cannot be obtained from any other source.

Secondary market activity for Carnet pieces is relatively limited, as most important works remain in the collections for which they were made, but the pieces that have appeared at auction have performed strongly, confirming the house's standing and the durability of collector interest.

Significance in the Broader History of Jewellery Design

Carnet's importance to the history of contemporary jewellery design extends beyond its individual achievements. The house has demonstrated, with sustained and consistent evidence, that world-class haute joaillerie can originate outside the traditional European centres — Paris, Geneva, Rome — and that an Asian designer working from an Asian city can compete on equal terms with the most established names in the field. This is not a trivial achievement. The international jewellery market has historically been structured around European prestige hierarchies, and the acceptance of Carnet at the highest level of that market represents a genuine broadening of the field.

At the same time, Carnet's work raises questions that are of genuine intellectual interest to anyone concerned with the history and theory of jewellery as an art form: about the relationship between cultural identity and design language, about the role of material knowledge in creative practice, about the nature of luxury and the ethics of gemstone sourcing. These are questions that the house's work invites rather than answers, and that is, in itself, a mark of its seriousness.

Further Reading

• Gems & Gemology — GIA's peer-reviewed journal, for gemological context on featured stone varieties
• American Gem Trade Association — gemstone origin and quality standards