Precious platinum brooch with half carat diamond, Porto, late 1930s

It is a naturalistically shaped rose branch that is presented to us here in precious platinum. One fully blossomed rose is shown with a large half-carat diamond in its center, another is still a bud. The leaves of the slender branch, but also the petals of the roses, are set all over - appropriately enough - with rose-cut diamonds, so that the brooch sparkles with every movement. The diamonds are set in platinum - that precious material that has only been used in jewellery since the early years of the 20th century, and from which solid pieces of jewellery have only been made since the 1930s. Thus the brooch seeks to refine the designs of the Belle Époque once again in material terms. For already in the late 19th century, people loved large diamonds and white jewels in the shape of blossoming branches, and the present piece is also intended to recall this epoch of splendour. Thanks to the hallmarks used, we know that the magnificent brooch was created in Porto, that Portuguese city on the Atlantic coast which has long been an economic and cultural centre of the country. The hallmarks used also allow us to narrow down the period of origin: One was used until 1937, the other from 1938, so that our Rosenzweig was probably created during this transitional period.

We want you to be 100% satisfied! For that reason, we examine, describe and photograph all of our jewellery with the utmost care.

You can rely on our years of experience in the trade and our expertise as a professional art historians for reviews of the antique jewellery. As a member of various trader organisations and the British Society of Jewellery Historians, we remain committed to the highest possible degree of accuracy. In our descriptions, we always also indicate any signs of age and defects and never hide them in our photos – this saves you from any unpleasant surprises when your package arrives.

Should you for some reason not be satisfied, please don’t hesitate to contact us so that we can begin to find a solution together. In any case, you can return any article within 30 days and we will refund the full purchase price.


We want you to be 100% satisfied! That’s why we examine, describe and photograph all our jewellery with the utmost care.

If for any reason you are still not satisfied, contact us and we will find a mutual solution immediately. Regardless, you can return any item within 30 days and we will refund you the full purchase price.