Handcrafted individual men's jewellery in silver, recycled gold and diamonds from the Frankfurt studio.
Atelier Ralf Kellenberger
Frankfurt/MainNew on Amplifa
About the Studio
Ralf Kellenberger is a jewellery designer who produces individual jewellery by hand in his studio in Frankfurt am Main. The range includes rings, bracelets, bangles, pendants and necklaces, with a focus on high-quality men's jewellery. Pieces are handmade from 925 sterling silver (rhodium-plated), gold from verifiably 100 % recycled precious metals, and diamonds; the range is complemented by individual engravings. Well-known reference projects include a winners' ring for The Icon League and the official Eagle Ring for Eintracht Frankfurt. Raised in the goldsmithing city of Pforzheim, Kellenberger combines old stories with modern aesthetics in his designs, inspired by vintage shops and Frankfurt architecture. The studio operates sustainably and sources its precious metals from Dr. Bernhard Burger AG, which certifies the use of recycled materials.
- Site
- Frankfurt/Main
- Processes
- Handcrafted jewellery (handcrafting), Individual engravings, Rhodium plating, Jewellery design / studio production of individual jewellery pieces (rings, bracelets, bangles,, Jewellery design, Handcrafted bespoke jewellery, Men's jewellery
- Materials
- 925 sterling silver (rhodium-plated), Gold (100% recycled precious metals), Diamonds, Rhodium (rhodium plating), Gold (100 % recycled precious metals)
- Certificates
- RJC certification (100% recycled precious metals from Dr. Bernhard Burger AG), 100 % recycled precious metals (Dr. Bernhard Burger AG)
- Industries
- Jewellery design/fine goldsmithing
- 01
Jewellery design
- 02
Handcrafting
- 03
Engraving
- 04
Rhodium plating/surface finishing
Materials & Processes
925 sterling silver (rhodium-plated)
Main material for rings, bracelets, bangles, pendants and necklaces; rhodium-plated surfaces.
Gold (100 % recycled precious metals)
Verifiably recycled precious metals from Dr. Bernhard Burger AG for high-quality jewellery.
Diamonds
As settings for exclusive one-of-a-kind pieces, e.g. winners' rings with 14 diamonds.
Rhodium (rhodium plating)
Surface finishing of silver jewellery for refinement and protection.
Locations
Frankfurt/Main
DEStudio – design and handcrafting
- Lot size
- One-of-a-kind pieces / custom-made items
- Materials
- 925 sterling silver, gold, diamonds
- Handcrafting
- Engraving
- Rhodium plating
Jewellery Pieces
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Handcrafted jewellery (handcrafting)Joining | – | – | – | – | 925 sterling silver, Gold, Diamonds |
| Individual engravingsSurface | – | – | – | – | 925 sterling silver |
| Rhodium platingSurface | – | – | – | – | 925 sterling silver |
| Jewellery design / studio production of individual jewellery pieces (rings, bracelets, bangles,Engineering | – | – | – | – | 925 sterling silver, Gold, Diamonds |
Additional services
Reference customers
Responsibility & Certification
The studio works with precious metals that are verifiably 100 % sourced from recycled materials supplied by Dr. Bernhard Burger AG (RJC-related certification). Production is done by hand with individual engravings.
| Evidence | Frankfurt/Main |
|---|---|
| 100 % recycled precious metals (Dr. Bernhard Burger AG) |
Background
Ralf Kellenberger grew up in the goldsmithing city of Pforzheim and learned the jewellery trade (graduated jewellery designer).
Opening of the studio in Frankfurt am Main (c/o Massif Central, Bethmannstraße 7-9).