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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryArts, Culture & RecreationWellness & SPA FacilitiesZurichDiamonds Private Gym GmbH
Diamonds Private Gym GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of i-Diamond is providing services in the areas of fitness, wellness, and health. Specifically, this includes: Personal training, including EMS training (electromuscular stimulation) and specific training programs such as EMShapeX and EMChairX; massage services, including energetic aroma oil massage, Madero massage, and other specialized massage techniques; nutrition counseling; and Visbody 3D body scanning and Vibrogym training. The company offers individually tailored programs and services to support customers in achieving their fitness and health goals.

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Offering

Products & services

Industry:Wellness & SPA Facilities
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4.3/5

Diamonds Private Gym GmbH

✓ Offered
9
Personal Training
Individual 1:1 training with programmes tailored to goals and available time, including muscle building, fat loss, body shaping and general strengthening.
EMS Training
Training with electrical muscle stimulation for muscle building, back training, body shaping and weight reduction, with private 30-minute sessions also bookable online.
EMShapeX Body Shaping
Non-invasive body shaping with magnetic waves to firm the buttocks, hips and abdomen; the website states muscle building and fat reduction as treatment effects.
EMChairX Pelvic Floor Training
Intensive pelvic floor training to strengthen neuromuscular control and help prevent urinary incontinence; the website also mentions non-surgical tightening.
3D Body Scanning
3D body measurement with body composition and posture analysis to track training progress and define improvement goals.
Vibrogym Training
Vibration training for muscles and joints to strengthen the body, improve mobility and flexibility, and support circulation.
Energetic Aromatherapy Oil Massage
Aromatherapy massage with pure essential oils for relaxation, easing tension and blockages, and supporting wellbeing and energy flow.
Madero Massage
Wood-tool massage to reduce fat deposits and cellulite, stimulate the lymphatic system and support body shaping.
Nutritional counselling
Nutritional counselling to complement training, with optimisation based on personal goals and guidance on supplements and Lifeplus products.
Trust & reputation

ranQ Trust Score of Diamonds Private Gym GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Diamonds Private Gym GmbH scores 77.8 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.84.824%
  • 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.67.110%
  • 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.70.08%
Diamonds Private Gym GmbH scores 86.7 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.100.012%
  • 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%
Diamonds Private Gym GmbH 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%
Diamonds Private Gym GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Diamonds Private Gym GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 13 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 13 reviews across all connected sources

Sources
GGoogle513
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Felsenstrasse 12a
8008 Zurich
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Limited Liability Company
UID
CHE-115.367.119
Founded
2010 · 16 years
Last commercial register change
November 16, 2023
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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