Atelier for fine jewellery in Idar-Oberstein: from in-house casting to gemstone setting, all under one roof
Hans D. Krieger GmbH & Co. KG
Idar-ObersteinNew on Amplifa
Craftsmanship
Hans D. Krieger manufactures fine jewellery in its own atelier in Idar-Oberstein. The workshop unites all steps of jewellery production under one roof: an in-house foundry based on proprietary gold alloys, diamond and gemstone cutting, goldsmithing with laser and CAD milling technology, gemstone setting, and polishing. The raw materials consist of recycled gold and gold from responsible sources; the authenticity and natural origin of every diamond is verified before processing. The design process begins with hand drawings and digital studies and follows defined principles of proportion and balance. Characteristic collections are Altura, Icon, Signature and Editions; rings, earrings, necklaces, pendants, bracelets and bangles are produced in 750 gold with diamonds and coloured gemstones.
- Site
- Idar-Oberstein
- Processes
- Casting (proprietary gold alloys, controlled casting process), Diamond cutting, Coloured gemstone cutting, Goldsmithing (laser, CAD milling technology, chasing, modelling), Gemstone setting, Polishing (surface finishing), Design (hand drawings, digital studies, CAD), Testing/verification of the authenticity and origin of diamonds
- Materials
- Rose gold 750, White gold 750, Gold (recycled), Diamond, Coloured gemstones
- Certificates
- Stone testing/verification
- Industries
- Fine jewellery / jewellery
- 01
Design (hand drawings, digital studies)
- 02
Stone selection and verification
- 03
Casting of proprietary alloys
- 04
Diamond and coloured gemstone cutting
- 05
Goldsmithing
- 06
Gemstone setting
- 07
Polishing
Materials & Processes
Rose gold 750
Sets the collection pieces with its warm colouring from proprietary alloy development.
White gold 750
Used for rings and jewellery pieces from the in-house foundry.
Gold (recycled)
Basis of the proprietary alloys from responsible sources.
Diamond
Is refined in the in-house cutting atelier after verification of authenticity and origin.
Coloured gemstones
Cut in the atelier in controlled steps, while preserving their natural identity.
Site
Idar-Oberstein
DEAtelier, workshop and company headquarters
- Materials
- Gold, diamond, coloured gemstones
- Foundry
- Diamond cutting workshop
- Gemstone cutting workshop
- Goldsmithing (laser, CAD milling technology)
- Polishing
Collections & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Casting (proprietary gold alloys, controlled casting process)Casting | – | – | – | – | Gold (recycled), proprietary gold alloys |
| Diamond cuttingEngineering | – | – | – | – | Diamond |
| Coloured gemstone cuttingEngineering | – | – | – | – | Coloured gemstones |
| Goldsmithing (laser, CAD milling technology, chasing, modelling)Joining | – | – | – | – | Gold |
| Gemstone settingAssembly | – | – | – | – | Diamonds, Gemstones, Gold |
| Polishing (surface finishing)Surface | – | – | – | – | Gold, Gemstones |
| Design (hand drawings, digital studies, CAD)Engineering | – | – | – | – | – |
| Testing/verification of the authenticity and origin of diamondsTesting | – | – | – | – | Diamonds |
Additional services
Stone Testing & Quality
The authenticity and natural origin of every diamond is verified using state-of-the-art methods; only stones that meet the criteria in clarity, colour and proportion are processed further.
| Evidence | Idar-Oberstein |
|---|---|
| Stone testing/verification |