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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesGoldsmithZurichGreen World Diamonds AG
Green World Diamonds AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Green World Diamonds AG designs and sells jewelry set with lab-grown diamonds, including rings, earrings, necklaces and bracelets, as well as loose lab-grown diamonds. It also creates custom jewelry and states that it uses recycled gold and platinum.

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Service area

Offering

Products & services

Industry:Goldsmith
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4.5/5

Green World Diamonds AG

✓ Offered8
LaborDiamanten (lab-grown diamonds)
Certified lab-grown diamonds in white and fancy colors, as loose stones in various carat weights, shapes and qualities; HPHT and CVD diamonds with IGI, GIA or GCAL certificates.
Engagement rings
Engagement rings with lab-grown diamonds, including solitaire, pavé, halo, three-stone and bypass designs; also custom-made and available in various cuts.
Wedding bands and wedding rings
Wedding bands, wedding rings, wedding bands and eternity rings with or without diamonds; classic and fashion models, partly as lab-grown diamond variants.
Bespoke / made-to-measure
Individually designed rings and jewellery on request, with advice, photos or ideas as a reference; CAD visualisation, 3D model and handcrafted execution.
High jewellery
High jewellery with large and rare lab-grown diamonds, including solitaire, three-stone, halo and signet ring designs, as well as selected earrings and necklaces.
Diamond jewellery
Diamond jewellery as a collection with rings, earrings, necklaces and bracelets; made with LaborDiamanten and a Swiss-Made finish.
Jewellery consultation and showroom appointments
Personal consultation by phone, WhatsApp or in the showroom in Zurich; support with choosing diamonds, designs and suitable pieces of jewellery.
B2B wholesale for LaborDiamanten
Wholesale for dealers, jewellers and goldsmiths with loose LaborDiamanten, melee, white and coloured stones, ex-works pricing and import/customs clearance service.
Trust & reputation

ranQ Trust Score of Green World Diamonds AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of November 2026

Green World Diamonds AG scores 98.4 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.97.224%
  • 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%
Green World Diamonds AG scores 76.5 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.70.212%
  • 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.70.07%
Green World Diamonds AG scores 86.7 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).86.722%
Green World Diamonds AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Green World Diamonds AG 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 117 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 117 reviews across all connected sources

Sources
GGoogle5117
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Zollikerstrasse 203d
8008 Zurich

At a glance

Legal form
Corporation
UID
CHE-406.077.196
Founded
2020 · 6 years
Last commercial register change
March 8, 2021
Employees
11 to 20

Active in 1 of 26 cantons · 1 municipality

  • ZHZurich
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.
100.0
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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