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

About RenéSim, the online jeweller

What is RenéSim?

RenéSim is Europe's first luxury jeweller to offer its premium jewellery creations exclusively online. Its founders, Maximilian Hemmerle and Georg Schmidt-Sailer, are pursuing their vision of combining 180 years of traditional family craftsmanship with all the benefits of modern e-commerce. The tradition and quality of bygone days meets the contemporary shopping experience offered by the Internet. RenéSim procures only the best-quality gems, diamonds and raw materials from selected international sources. Its products are manufactured by Germany's finest goldsmiths using the traditional techniques of their craft. At RenéSim, customers can design their own individual jewellery by selecting their favourite combination of fine gems and precious metals, either online or in personal consultation, to produce one-of-a-kind pieces. First-class customer service and expert advice are all part of the RenéSim experience.

Find out more about RenéSim the company, its history and the vision of its two Managing Directors here.

History of RenéSim

The name of the online jeweller RenéSim was inspired by René Sim Lacaze, grandfather of Maximilian Hemmerle. René Sim Lacaze was feted as one of the most influential 20th-century jewellery designers in France and Europe, and was also head of jewellery design at Van Cleef & Arpels. He designed jewellery for clients including the Duchess of Windsor.

Franz Hemmerle, father of Maximilian Hemmerle, was co-owner of the world-famous exclusive jewellery store Gebrüder Hemmerle in Munich's prestigious Maximilianstrasse for over 30 years. After withdrawing from the family business, Franz Hemmerle worked with companies including Bulgari S.A.

Cocktail Rings RenéSim

Individual jewellery - designs by Franz & Maximilian Hemmerle

For Maximilian Hemmerle and his father, representing the fourth and fifth generations of jewellers in their family, RenéSim is the continuation of a family tradition. Father and son work together to create exclusive jewellery designs for RenéSim, describing their style as 'New European Art Déco'. All pieces bearing the label 'Designed by Franz & Maximilian Hemmerle' are available exclusively online at RenéSim. The jewellery designs can be personalised and customised online to suit individual preferences - a special feature which is highly appreciated by our discerning customers. Our designers fulfil the desire for absolutely unique and distinctive pieces by creating personal one-of-a-kind jewellery on request.

Find out more about jewellery designed by Franz & Maximilian Hemmerle and the range of personalisation options here.

You can explore the background of the company RenéSim and RenéSim jewellery designs in more detail in our History section.

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What is RenéSim? Find out more about the Munich-based online jeweller here.

From raw materials to the finished piece: discover more about jewellery production at the jewellers Franz & Maximilian Hemmerle.

RenéSim also offers the opportunity to commission exclusive custom pieces: Individual Jewellery.

Find out about René Sim Lacaze, the inspiration behind RenéSim and the forebear of Franz and Maximilian Hemmerle: René Sim Lacaze.

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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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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