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Trademark for the Highest Quality
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The Secret of the Diamond W

The Diamond W, the Wellendorff trademark, signs each individual item of jewellery and vouches for the highest level of quality and extraordinary creativity. A full-cut diamond set in 18-karat gold turns it into an exclusive trademark. 

A sign of the utmost precision

Hanspeter Wellendorff put in place his vision to sign each individual piece of jewellery and place the Diamond W on it. In 1970, he established Wellendorff as a brand, and introduced the Diamond W shortly after that. Since then, all pieces have been adorned with it, symbolising the company's commitment to the highest level of quality, precision and craftsmanship – and representing Genuine Values. Tested and checked, the "Diamond W" guarantees quality that will last for generations.

Wellendorff Expert

Your Wellendorff Expert
Roslyn McIntyre

I am happy to support you in creating your special jewelry experience from the jewelry selection to personal ideas for the presentation. To contact our European expert, click here. You can reach me via phone or send a message:

Phone (+1) 415 86 04 010

When indicating a phone number, I will call you back personally.


Monday - Saturday 10am - 6pm (GMT-8)

Wellendorff - Genuine Values