+44 20 351 466 05
+49 89 1222 893 0

Individual Designs by Master Jewellers from RenéSim Online Jewellery Store

Commission RenéSim to create individual pieces of jewellery that perfectly suit your personal style:

RenéSim specialises in designing individual creations that perfectly match your style and enhance your uniqueness and distinctive personality. We are happy to fulfil every customer request - however unusual.

Exclusive jewellery designs by Franz Hemmerle, former co-owner of renowned jewellery store Hemmerle in Munich's Maximilianstrasse, and Maximilian Hemmerle, his son and founder of RenéSim.

Maximilian Hemmerle's grandfather, the famous French jewellery designer René Sim Lacaze, created individual jewellery for prestigious companies including Van Cleef & Arpels, Cartier and Mauboussin and for celebrity clients such as the Duchess of Windsor and Marlene Dietrich.

In the world of haute joaillerie, we seek out the most precious gems in the world and ensure our top goldsmiths use only the finest materials. For this reason, our individual jewellery creations are renowned for their superb quality, supreme craftsmanship and exquisite detail.

As part of our outstanding customer service, we provide you with continuous personal advice and support from the initial idea to delivery of the finished product.

Franz and Maximilian Hemmerle are happy to serve as your personal jewellery designers, creating masterful one-of-a-kind pieces that perfectly underline your personal style.

Despite supplying supreme quality, we are able to offer very good prices. This is due to our exclusively online business model and our extensive network of dealers and partners, built up over decades.

When it comes to fulfilling your wishes, you benefit from our 180-year family tradition and extensive experience in the world of jewellery - because in the modern day and age, receiving expert advice and personally tailored service via the Internet is by no means a matter of course.


Ebony ring with
diamond, 2011

Franz & Maximilian
Hemmerle, 2010

René Sim Lacaze,
Paris, 1937

Our goldsmiths produce
meticulously crafted pieces.

We are always ready to provide
assistance and advice.

Heart-shaped ring,

Good value for money

Bracelet with ornament,


Contact us without obligation and tell us your ideas.
We look forward to receiving your personal enquiry!

RenéSim in Internet World

Online portrait: RenéSim provides discerning customers with supreme quality and superb service. High-class jewellery at online prices.



Our new advertising campaign skilfully turns the spotlight on exquisite coloured gemstones and custom-designed pieces. The campaign can be seen in media including VOGUE, GQ and AD.


RenéSim. Also profiled in the media:

Vogue Süddeutsche Zeitung InStyle GQ Elle

About RenéSim Service Ring Sizes Newsletter Press Jobs Terms and Conditions Privacy Policy Credits and Legal Notice

renesim GmbH

Branch office (appointment only):
16 Hanover Square, Mayfair
W1S 1HT London, United Kingdom
T +44 20 351 466 05

Amiraplatz 1, D-80333 Munich
T +49 89 1222 893 0

Hours Mon - Fri 8 am - 6 pm


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100% Satisfaction guarantee
  • 180 years of family craftsmanship in the jewellery business
  • 30-day right of return
  • Supreme quality and top service
  • Free ring size adjustment
  • Personal customer care and high availability
  • Secure payment and free shipping from Munich
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As an online jeweller, RenéSim combines the benefits of a modern online-based business model with 180 years of family-run traditional craftsmanship in the jewellery industry. Gemstones such as diamonds are the central focus at RenéSim; we supply high-quality, thoroughly individual pieces such as engagement rings in addition to loose diamonds. We offer unique diamond post earrings, diamond rings, memory rings, engagement rings and much more. Consult the jewellery experts at RenéSim!

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