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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryIndustryJewelry & Precious Metal ManufacturingCarouge GeMuller Martin, Manufacture - Atelier 401
Muller Martin, Manufacture - Atelier 401 Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the manufacture and sale of jewelry, particularly handmade, unique and personalized bijoux, such as wedding rings, engagement rings, bracelets, earrings and other jewelry pieces made of gold, platinum and silver.

AI-generated
Offering

Products & services

Industry:Jewelry & Precious Metal Manufacturing
✓ Offered8
Custom Jewellery Rings
Custom-made rings in gold, platinum or silver; individual design from photo or sketch, with stones, finishes and engraving, plus transformation of existing jewellery.
Engagement and Wedding Rings
Engagement rings and wedding bands in gold, white gold, platinum or silver; solitaires, trilogy designs, classic and personalised versions, with engraving on request.
Custom Gold Rings
Gold rings with solitaire, trilogy, halo and custom designs; different settings, gemstones and finishes, including personalised execution.
Silver Rings
Handcrafted silver rings, including textured, hammered and rhodium-plated models as well as wider variants.
Coin Rings
Rings made from Swiss coins, including 1- and 5-franc pieces, with date options, rhodium-plated variants and handcrafted versions.
Memorial and Symbolic Jewellery
Pendants, bracelets and special ring designs with paragliding, paddle and other symbolic motifs; handcrafted and partly offered as gift items.
Gift Vouchers
Gift vouchers for specific rings or open amounts; available as vouchers for selected Atelier 401 products.
Ring Sizer
Ring sizer for determining finger size; sent by post and tried at home before placing an order.
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4.5/5

Muller Martin, Manufacture - Atelier 401

Trust & reputation

ranQ Trust Score of Muller Martin, Manufacture - Atelier 401: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Muller Martin, Manufacture - Atelier 401 scores 98.5 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.97.324%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.100.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.100.08%
Muller Martin, Manufacture - Atelier 401 scores 76.4 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.95.212%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Muller Martin, Manufacture - Atelier 401 scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Muller Martin, Manufacture - Atelier 401 scores 22.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Muller Martin, Manufacture - Atelier 401 reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 out of 5 stars from 122 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 122 reviews across all connected sources

Sources
GGoogle5122
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Rue des Noirettes 34
1227 Carouge Ge
Opening hours
Mon
08:30 - 18:00
Tue
08:30 - 18:00
Wed
08:30 - 18:30
Thu
08:30 - 18:00
Fri
08:30 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-326.522.158
Founded
2013 · 13 years
Last commercial register change
March 15, 2013
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.67.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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