
Manufacturing of individual fancy red lab-grown diamonds (HPHT) with treatment, hand polishing and classification.
dEYEmond GmbH & Co. KG
IsselburgNew on Amplifa
About dEYEmond
dEYEmond GmbH & Co. KG specialises in the manufacture of fancy red lab-grown diamonds. The starting material is individually selected rough diamonds based on HPHT (crystallisation under high temperature and high pressure), whose growth process physically resembles that of natural diamonds. In its own process, the diamonds are individually treated by irradiation and annealing to create hues from orange red to pinkish red. This is followed by individual hand cutting and hand polishing under constant microscopic control with regard to shape, dimensions and symmetry. Finally, each brilliant is characterised and classified. The company supplies the jewellery industry, jewellers and the diamond trade in Europe and the USA. The registered office and business address are located in Isselburg (North Rhine-Westphalia).
- Site
- Isselburg
- Processes
- HPHT lab diamond synthesis (crystallisation under high temperature and high pressure), Irradiation and annealing of natural/HPHT diamonds to create colour (fancy red)., Hand polishing/cutting of brilliants (individual, microscopically controlled), Characterisation and classification of rough diamonds (quality control), Individual selection of rough diamonds, Treatment (irradiation/annealing) of HPHT lab-grown diamonds, Hand polishing of individual brilliants under microscopic control, Characterisation and classification of the diamonds
- Materials
- Lab grown HPHT diamond, Natural diamond (rough diamond, for colour treatment), Lab-grown HPHT diamond, Natural diamond (rough diamond)
- Certificates
- Microscopic polishing control, Individual classification
- Industries
- Jewellery industry, Jewellers, Jewellery manufacturers, Diamond trade
- 01
Individual selection of rough diamonds
- 02
HPHT crystallisation (lab-grown)
- 03
Irradiation and annealing to create colour
- 04
Hand polishing/cutting under microscopic control
- 05
Characterisation and classification (quality control)
Materials & Processes
Lab-grown HPHT diamond
Main raw material for producing fancy red brilliants; crystallisation under high temperature and high pressure.
Natural diamond (rough diamond)
Rough diamonds as starting material for colour treatment by irradiation and annealing.
Site

Isselburg
DERegistered office and manufacturing
- Lot size
- Single pieces (from 1 piece)
- Materials
- Lab-grown HPHT diamond, natural diamond
- Microscope for polishing control
Diamonds
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| HPHT lab diamond synthesis (crystallisation under high temperature and high pressure)Casting | – | – | – | – | Diamond (lab-grown, HPHT) |
| Irradiation and annealing of natural/HPHT diamonds to create colour (fancy red).Heat treatment | – | – | – | – | Diamond, lab grown HPHT diamond |
| Hand polishing/cutting of brilliants (individual, microscopically controlled)Surface | – | – | – | 1 piece | Diamond |
| Characterisation and classification of rough diamonds (quality control)Testing | – | – | – | – | Diamond |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Microscope (polishing control) | – | – | – | – | Isselburg |
Additional services
Quality
Polishing is carried out under constant microscopic control; each diamond is finally characterised and classified. Only diamonds with top quality in cut and clarity are accepted.
| Evidence | Isselburg |
|---|---|
| Microscopic polishing control | |
| Individual classification |
History
- 2022
Positive feedback from dealers and jewellers in Europe and the USA; establishment of a network of jewellery manufacturers and jewellers for the market launch of the fancy red diamonds.