CHRISTIAN AG (Diamonds by Christian)

If you land at Zurich Hauptbahnhof with a ring to buy and limited time before a train, CHRISTIAN AG's Bahnhofplatz shop is about as convenient as this list gets. It occupies ground-floor space inside the Hotel Schweizerhof, right beside the station and a few steps from Bahnhofstrasse itself, and it opened there in June 2023 as the company's flagship. The shop trades under the CHRISTIAN name, and its own diamond jewellery, including a good share of the engagement rings on display, is sold under the in-house brand Diamonds by CHRISTIAN. It is the same business either way: one company, one till, one warranty desk, whichever name is on the box.

CHRISTIAN AG is not a newcomer dressed up as a heritage house. It was founded in 1984 by R. Celik-Jacob, a trained goldsmith who had worked at Tannler AG before opening his own first store on Limmatplatz. Zurich's cantonal commercial register (via moneyhouse.ch) shows the company entered the register on 22 January 1985 as an Aktiengesellschaft with CHF 200,000 in share capital, a paper trail that lines up with the company's own account of its founding. The firm operated for years as Christian-Goldschmiede AG before renaming to CHRISTIAN AG in 2023, the same year the Bahnhofplatz store opened. It remains a family concern: the founder is still connected to the business, which is now run day to day by his three sons, Christian, Matthias and Gabriel Jacob, all named as board members in the register alongside Resit Celik.

What you get

This is not a single-brand maison. CHRISTIAN AG sells watches and jewellery from a self-described portfolio of 70 manufacturers, everything from Longines and Rado to smaller names like Mido and Frederique Constant, alongside its own house lines. For an engagement ring specifically, that breadth matters less than the in-house Diamonds by CHRISTIAN collection, built on 750 gold (the hallmark for 18-karat) in yellow, white and rose finishes, set with diamonds ranging from small pave stones up to solitaires north of half a carat. Pieces we looked at directly on the site ranged from about CHF 899 for a 0.23 carat solitaire to CHF 3,680 for a princess-halo design at 0.65 carat, with plenty in between, such as a 0.76 carat solitaire at CHF 1,990. Every price shown online includes Swiss VAT, so what you see at checkout is what you pay, no separate tax line added at the register.

Buyers who want something more personal than an off-the-shelf ring can use the online 3D wedding ring configurator to adjust metal, stone and setting before ordering. The company does not publish a turnaround time for configurator orders on the pages we could check, so anyone on a deadline (a proposal trip, a specific date) should confirm the timeline directly with staff before committing, rather than assume it matches an off-the-shelf purchase.

What stands out for someone new to Zurich

The most useful signal for an international or expat buyer is not a marketing line, it is a launch date: CHRISTIAN AG only added an English version of its website in 2024, two years after a French version arrived in 2018. That is a concrete sign of a business investing in non-German-speaking customers relatively recently, worth knowing whether you read that as reassuring (a live, growing effort) or as a reason to double-check English service quality in person before relying on it for a big purchase.

On the practical side, terms are published plainly rather than buried. The site lists a 14-day exchange right, free shipping, free gift wrapping, and 0% instalment payment spread over 3, 12 or 24 months, all stated on the homepage rather than hidden in a footnote. Click and collect is also offered, useful if you would rather inspect a ring in person at Bahnhofplatz before it ships. What is not published anywhere we found is any detail on international shipping, customs handling, or an export VAT refund process for a buyer who orders from abroad or is about to leave Switzerland for good. If that applies to you, ask the store directly rather than assume the domestic free-shipping terms extend across a border.

How it's organised

CHRISTIAN AG runs four physical stores plus the uhrenschmuck24.ch site. Two are in Zurich: the Bahnhofplatz 7 flagship (postcode 8001, inside Hotel Schweizerhof) and an older shop at Langstrasse 47 in Kreis 4 (postcode 8004), which the company took over from the former Bijouterie Class in 2009 and has since renovated. A third store opened in Lucerne at Bahnhofplatz 3 in April 2024, in premises the company notes were home to the well-known Ruckli jewellery business for over 100 years. A fourth, in Lausanne on Rue du Grand-Pont, opened in November 2025, extending the group into French-speaking Switzerland. An earlier store on Limmatplatz, the company's original 1984 location, closed in 2025 after four decades of trading, according to the company's own milestone timeline.

The Bahnhofplatz flagship keeps long, walk-in retail hours rather than an appointment-only model: weekdays 9:00 to 19:30 and Saturdays 9:00 to 19:00, both later than the Helvetiaplatz, Lucerne and Lausanne stores, which close at 18:30 on weekdays. We found no online appointment booking system, which suggests the standard path here is to walk in during opening hours rather than schedule a private consultation, a difference worth knowing if you are used to a by-appointment jeweller.

How it compares

Set against the older names on this list, houses that have occupied the same Bahnhofstrasse address for a century or more, CHRISTIAN AG's flagship is genuinely new to this particular spot, open only since 2023. What it trades on instead is scale and clarity: a much wider brand roster than a single-maison boutique, a house diamond jewellery line with visible per-item pricing online before you ever walk in, and a straightforward instalment and exchange policy stated up front. If you value being able to compare a specific ring's price and specifications from your phone before you show up, that openness is a real advantage over a house that quotes only in person. If you are drawn to this category specifically for a single family that has cut stones on the same street since the 19th century, CHRISTIAN AG's proposition is different: over 40 years of trading as a company, but a station-side flagship, not a shop your grandparents could have visited at this exact address.

Who it suits

This fits an international or expat buyer well: someone who wants to see a real price in Swiss francs before committing, who appreciates 0% instalments over 3, 12 or 24 months rather than paying the full amount up front, and who would rather pop into a shop attached to the main station on the way to or from the airport than book a separate appointment across town. It also suits anyone who wants a second, unrelated source on a ring they have already seen elsewhere, since CHRISTIAN AG's Diamonds by CHRISTIAN pricing is visible without a store visit. It suits less well a buyer set on a single-family, single-address heritage story, or anyone who needs firm, published answers on international shipping and duty before they order, since those specifics were not published on the pages we checked and would need a direct question to staff.

The verdict

CHRISTIAN AG earns its place on Bahnhofplatz on real substance: a genuine 1984 founding backed up by the commercial register, a family that still runs it, four stores including a station-side flagship that opened in 2023, and an in-house diamond jewellery brand with prices you can check before you visit. The 14-day exchange right, free shipping and interest-free instalments are stated plainly rather than left to a sales conversation. The one real gap for this tenant's reader is that cross-border shipping, duty and export VAT terms are not published anywhere we could find, so an expat leaving Switzerland or a buyer ordering from abroad should ask before assuming the domestic terms apply. That is a question worth a phone call, not a reason to skip a shop that is otherwise transparent, well located, and easy to reach on the way through the station.