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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryJewelry & Precious Metal ManufacturingZurich77 Diamonds Swiss GmbH
77 Diamonds Swiss GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of 77 Diamonds GmbH is the manufacture and sale of jewelry, particularly diamond jewelry, as well as the creation of bespoke, exclusive designs. The company also offers consulting services provided by experts to support customers in selecting and crafting jewelry pieces.

AI-generated
Offering

Products & services

Industry:Jewelry & Precious Metal Manufacturing
✓ Offered9
Engagement Rings
Engagement rings to design yourself, including solitaire, halo, vintage, trilogy and diamond band designs, with a selection by shape, metal and stone type.
Wedding Rings
Wedding rings in classic and diamond-set designs for women and men, with a choice of gold, platinum and palladium, plus personalisation via engraving and finishing.
Eternity Rings
Eternity rings with diamond setting in claw, channel and designer-set styles, optionally as half or full eternity, also with engraving and various metals.
Bespoke Jewellery
Custom-made jewellery based on the customer’s design, with consultation, design process, drawings and computer renderings, as well as production in the workshop and delivery of the finished piece.
Loose Diamonds
Loose diamonds in many shapes, carat sizes and quality grades, with certification by recognised grading organisations and selection by colour, clarity, cut and price.
Diamond Jewellery
Diamond jewellery with necklaces, earrings, bracelets and cocktail rings, as well as the option to design earrings and pendants yourself.
Loose Gemstones
Loose gemstones, especially sapphires, rubies and emeralds, with selection by shape and information on symbolism and responsible sourcing.
Lab-grown diamonds
Lab-grown diamonds for engagement rings and as loose stones, including Cupid’s Ideal Lab Grown and fast shipping on selected stones.
Book an Appointment
Appointment booking for showrooms, online consultation or phone support from jewellery consultants for choosing rings, determining sizes and design questions.
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4.1/5

77 Diamonds Swiss GmbH

Trust & reputation

ranQ Trust Score of 77 Diamonds Swiss GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

77 Diamonds Swiss GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
77 Diamonds Swiss GmbH scores 65.3 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.50.012%
  • 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.70.07%
77 Diamonds Swiss GmbH scores 83.3 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).83.322%
77 Diamonds Swiss GmbH scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

77 Diamonds Swiss GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Talacker 41
8001 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-483.881.027
Founded
2023 · 3 years
Last commercial register change
July 7, 2025
Employees
11 to 20
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.
88.0
6%
  • 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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