Casa Tres was founded in response to what New York-based jewellery specialist and gemmologist Mirta de Gisbert describes as “a broader shift in how designers want to grow alongside the realities of the current fine jewellery landscape.” Rising material costs, oversaturated markets and mounting operational pressure have impacted growth for independent brands. “For many designers,” she explains, “scaling a brand has started to look less like creative expansion and more like operational overload.”
Rather than positioning itself as a traditional showroom or intermediary, Casa Tres was conceived as a long-term partner: one that understands both the emotional and technical dimensions of jewellery-making, as well as the structural demands of operating in the US luxury market. “Casa Tres was founded to meet these realities by providing designers with a trusted partner who understands both the nuances of design and the complexities of scaling a luxury brand,” says de Gisbert.
While the US already has manufacturers, logistics providers and showrooms, the co-founder observed that they “typically exist in isolation.” The gap, she explains, was “the lack of a truly integrated ecosystem designed specifically for independent fine jewellery brands.” At Casa Tres, production, inventory management, quality control, logistics and client engagement are aligned under a single vision. “One where the entity holding inventory for a designer can also show pieces from that inventory if a designer’s potential client wants to try it on,” she notes, and where returns can be assessed and repaired, if necessary, in-house.
This integration is particularly significant for international brands entering the US, where costs are often underestimated. “Inventory risk and client acquisition tend to be the most underestimated,” de Gisbert explains, especially when high-value pieces are involved. Casa Tres steps in, offering a physical and operational base in New York, with “rigorous inventory oversight, secure handling and day-to-day management.” Unlike conventional retail consignment, Casa Tres’ model “allows inventory to remain accessible and in motion,” enabling designers to move the jewellery between private clients, retail partners and other opportunities.
Operational support extends beyond storage and shipping. Through its in-house high jewellery factory, Casa Tres manages resizing, customization and repairs domestically. This, de Gisbert notes, eliminates the need to send pieces overseas for routine work — “a process where shipping costs and delays can easily outweigh the repair itself.” The presence of inventory in-market also enables access to press and collectors. Additionally, editors and clients are far more likely to work with brands whose pieces are accessible in-market.
“Protecting a designer’s creative vision is central to Casa Tres,” de Gisbert notes. “We don’t dictate aesthetics, collections or artistic direction.” The designer’s voice, she emphasizes, needs to remain intact. Where Casa Tres does engage is strategically, advising on pricing, transparency, storytelling and client experience. “If a brand isn’t open to engaging with those realities, then we may not be the right partner,” she says. Guidance is offered “always in dialogue, never by imposing a formula.”
This guidance draws on the founders’ collective experience. De Gisbert brings 17 years in the jewellery industry as a GIA Graduate Gemologist, with a “client-first perspective” shaped by growing up between Europe and Africa. Her co-founders own and operate a high jewellery factory in New York and have decades of experience working with brands at the highest level. Together, they bring “over 50 years of experience across design, production and the luxury market,” allowing Casa Tres to support creativity while building durable structure. “The line for us is simple,” she explains. “We protect the integrity of the design, while putting in place the operational and strategic structure that allows that vision to succeed in a demanding market.”
Casa Tres showroom also functions as a private, by-appointment destination for collectors. “Fine jewellery is deeply emotional and often very personal,” she says. “When you enter Casa Tres, you’re able to sit with the jewellery and have conversations that might not be possible in a more crowded setting.” The emphasis is not on selling, but on understanding value.
Growth for Casa Tres is guided by intention, with curation being selective. “There’s always a balance between maintaining a hands-on, relationship-driven approach and building the scale needed to make the company sustainable,” she points out. Operational scale strengthens systems behind the scenes, while brand partnerships remain carefully chosen. “Sustainable growth for Casa Tres means being able to support more designers while keeping the experience personal and hands-on,” de Gisbert adds. “We also see growth as something we share with our brands. As they build their presence, we grow alongside them.”