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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,740 companies indexed · Last updated: today
DirectoryIndustryJewelry & Precious Metal ManufacturingKüsnacht ZhDiamondonline Swiss GmbH
Diamondonline Swiss GmbH Logo
Verified· 3 sources

Diamondonline Swiss GmbH

Summary

About the company

The core activity of Diamondonline is the trade in diamonds, including the purchase, sale, evaluation and certification of diamonds, as well as the manufacture of custom-made jewelry. The company offers its services to both private customers and the trade (B2B) and has branches in Zurich, Paris, Hong Kong and India.

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Products & services

Industry:Jewelry & Precious Metal Manufacturing
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6
Diamond sales
Certified diamonds in the stock-exchange price range, selection by cut, clarity, colour and carat; individual search, price enquiries and made-to-order rings or jewellery.
Diamond buyback
Purchase of diamonds and diamond jewellery based on the GIA certificate or following the issuance of a certificate; appraisal and buying at good prices.
Diamond appraisal
Valuation of diamonds according to the rules of the GIA certificate; determining value using the four Cs and other value-determining features.
Diamond certification
Certification of diamonds according to GIA and HRD standards; checking identity, origin, authenticity and value-determining characteristics.
B2B diamond trading
Supplying goldsmiths, diamond traders and small businesses with GIA-certified diamonds at market prices and on a wholesale basis.
Reviews

Aggregated rating

Aggregated rating
4.6
of 5

Aggregated from 117 reviews across all connected sources

Sources
GGoogle4.6117
★TrustpilotSoon
PProvenExpertSoon

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Location

Chrummwisstrasse 21
8700 Küsnacht Zh
Opening hours
Mon
10:00 - 17:00
Tue
10:00 - 17:00
Wed
10:00 - 17:00
Thu
10:00 - 17:00
Fri
10:00 - 17:00
Sat
10:00 - 17:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-115.422.907
Founded
2010 · 16 years
Last commercial register change
February 26, 2026
Employees
11 to 20

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