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Detail of the Black MK3 ring
Detail of the Black MK3 ring
A person wearing the MK3 Ring on their ring finger while sitting on a black leather sofa
Design of the MK3 ring's project with a hand that draws, eraser and sharpener.
Gift box with a Certificate of Authenticity and a drawstring pouch made of organic cotton
MK3 ring sizes guide


Urban Olive Design
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Urban. Minimalist. Original. Wear it as concrete proof of your style.

Inspired by the MK3 building in Berlin, the MK3 ASYMMETRIC RING is designed with comfort in mind.

Multifaceted and asymmetrical, each side of the ring is different, so you can adjust your look based on your mood, your unique taste, or your outfit. 

So light, you’ll forget you put it on. So versatile, you’ll never want to take it off.

The MK3 BLACK CONCRETE RING will be shipped in its own gift box with a Certificate of Authenticity and a complimentary drawstring pouch made of organic cotton – the perfect companion for travelling with or storing your wearable sculpture.

We strive to make our packaging material as sustainable as possible. Our packaging is designed to minimise waste, and its components are reusable or recyclable.


  • Designed in Berlin, Germany
  • Handmade and original
  • Strong and water-resistant
  • Lightweight for maximum comfort
  • Unisex
  • Made of cement and organic resin
  • Black (also available in Grey)
  • Available in Silver 925 in the collection OLTRE
  • Care instructions: Clean with soap and water


  • Small: 16x16mm (internal measurement) - Weight: 2.4 gr
  • Medium: 17x17mm (internal measurement) -  Weight: 2.6 gr
  • Large: 18x18mm (internal measurement) - Weight: 2.7 gr
  • Extra Large: 19x19mm (internal measurement) - Weight: 2.8 gr

Pro Tip:

To insert and remove a squared ring effortlessly, remember that the diagonal diameter will be longer than the length of the sides. So, when putting on the ring, turn it slightly on your finger so you can benefit from additional diameter width and slide it on effortlessly over the knuckle. When the ring is in place, you can then turn it a few times to find the best-fitted position and your favourite face.

Each piece is unique. The artistic look of the creation is achieved through a particular hand-crafting process. Any imperfections are to be considered a feature, not a flaw.

If you have questions about this artwork or feel unsure about finding the right size for you, please email us at