ADDA

ADDA is the working name of Enikö Adda, known on her own site simply as Eni, a jewellery maker who designs and sells handcrafted pieces from a home studio in Urdorf. Urdorf sits just west of Dietikon in the Limmattal, a short train ride from Zürich HB, and it is one of the smaller and newer names in a category otherwise dominated by long-running shopfronts. The business is registered with the Zurich commercial register as an Einzelfirma (a Swiss sole proprietorship), with the entry dating to 2020, and its stated purpose on that register is the sale of jewellery, decorative items and accessories rather than bridal wear specifically. That distinction matters for anyone landing here from a "top engagement ring shops" list: ADDA makes rings, but it does not market itself as an engagement or wedding ring specialist anywhere on its own site.

What you actually get is a personal, made-to-order relationship with the person doing the work. Eni describes herself on the homepage as someone who enjoys creating delicate, personalised jewellery "for happy moments and other milestones," and the site is built around that idea, right down to its title, Meilensteine, German for milestones. She says every piece is designed with care and that no two are ever identical, which is a reasonable claim for a solo maker working to individual briefs rather than running a production line. The material story is specific and worth noting for ring shoppers in particular: the site states she works exclusively with gemstones and semi-precious stones set in sterling silver 925. There is no mention of gold, platinum, or diamonds anywhere on the site. If your idea of an engagement ring is a classic diamond solitaire in gold, this is not that kind of workshop; if you are open to a coloured-stone silver ring with a strong one-off design, it lines up well.

The published range covers bracelets, necklaces, earrings and rings, all described as made only from gemstones and sterling silver, alongside what the site calls individual design consultation tailored to the client. Alongside new commissions, ADDA offers a repair and rework service for existing pieces, specifically jewellery with family history or emotional weight. The site's own phrasing is that she reworks inherited pieces "with a lot of care" and gives old jewellery a new life. For an expat who moved to Zürich with a grandmother's ring or a partner's family stone and wants it reset into something new rather than starting from raw materials, this is a genuinely useful, clearly stated service, more concrete than most of what a home-studio maker publishes.

What stands out

The thing that separates ADDA from a faceless online jewellery shop is that everything on the site reads as one person's actual work rather than a catalogue. The homepage includes short customer notes with photos attached (a client writing that she loves her bracelets, another thanking Eni for a piece with "so much joy"), which is thin as evidence goes but does at least point to a real, ongoing client relationship rather than a dormant storefront. The site also lists eight reasons to buy from ADDA, including that the pieces are made in Switzerland, that each item is a one-of-a-kind (Unikat), that there is a money-back guarantee, and that delivery is described as free. None of those eight points comes with numbers attached, no price range, no return window, no delivery timeframe, so treat the guarantee and the free delivery as things to confirm directly rather than fixed terms you can rely on sight unseen.

How it's organised

There is no shop window here and no listed opening hours; the business operates from a private address, Schulstrasse 29 in Urdorf, postcode 8902. Contact is by phone at +41 78 885 48 73 or by email at eadda@gmx.ch, both published directly on the site's contact section alongside the address. The commercial register entry (Handelsregister-Nr CH-020.1.084.200-0, UID CHE-231.740.306) names Enikö Adda as the sole owner, with Claudio Adda also holding signing authority, which is consistent with a small family-run operation rather than a staffed retail business. Practically, this means the way in is a phone call or an email rather than walking in or booking through an online system: nothing on the site describes a formal booking process, so how a first consultation happens (in person at the studio, by phone, or over video) is worth clarifying when you reach out.

One point that matters specifically for the reader this tenant is written for: the site itself is entirely in German, with no English version or language toggle found on any page. There is nothing on the site to confirm whether Eni conducts consultations in English. Given the personal nature of the process, this is worth asking about in the first email rather than assuming, especially if your German is limited and you want to describe a specific design idea accurately.

How it compares

Most of the other entries in this Baden, Wettingen and Limmattal category are established shopfronts with decades of trading history and a public storefront you can walk into during posted hours. ADDA is a different kind of listing: newer (registered in 2020), home-based, and working in silver and gemstones rather than the gold-and-diamond stock a traditional jeweller carries. It earns its place here on the strength of the personal design process and the heirloom rework service rather than on longevity or a large in-stock catalogue. If what you want is a fast, walk-in experience with a ring displayed under glass and a price tag on it, look further along this list. If you want a one-off piece designed around a conversation with the maker, and you're comfortable with silver and coloured stones rather than a traditional diamond-and-gold ring, ADDA is worth the email.

Who it suits

This suits a couple who wants something distinctive rather than a catalogue ring, particularly if one of you already has an heirloom stone or an old piece of family jewellery you'd like reworked into an engagement ring rather than buying new outright. It also suits anyone comfortable designing a piece over email or phone rather than choosing from a display case. It's a weaker fit if you need a firm price before you commit (nothing is published), if you're on a tight timeline before a proposal and need a guaranteed turnaround (no lead times are stated anywhere on the site), or if a diamond-set gold or platinum ring is non-negotiable for you.

The verdict

ADDA is a small, genuinely active Swiss business (the commercial register confirms it is currently active, not dormant or wound up) run by one maker who is clearly proud of doing individual, non-repeated work and who has built a real, if quiet, secondary service around repairing and repurposing jewellery with sentimental value. The caveats are real but minor and all come down to the same root cause: this is a home studio with a simple site, not a full-service bridal retailer, so it publishes almost nothing about price, timing, guarantees or language of service. None of that should be read as an operator hiding information; it reads more like a one-person business that hasn't built out its site beyond the essentials. Reach out directly before assuming anything about cost, lead time or whether the conversation can happen in English, and be clear from the first message that you're asking about an engagement ring rather than general jewellery, since that isn't a category the site names on its own.