Ethically Sourced
Natural Diamonds
Ethically sourced directly from our African mines, our natural diamonds are available in gem, industrial, and run-of-mine parcels.
Gem-Quality Diamonds
Kolwezi Metals offers access to high-quality rough diamonds suitable for cutting into fine jewelry. These stones are selected for their superior clarity, color, and potential, providing a unique opportunity for investors and gem cutters.
High Clarity & Color
Parcels include a range of high-clarity stones suitable for creating exceptional jewelry.
Investment Grade
These diamonds possess the qualities sought after for long-term investment and value retention.
Kimberley Process Certified
Guaranteed conflict-free, with full KP certification for ethical assurance.
Full Provenance
Complete documentation of origin and characteristics for every parcel.
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Run-of-Mine (ROM) Parcels
For wholesalers and large-scale buyers, we offer run-of-mine parcels. These lots contain a diverse, unsorted mix of diamonds directly from our mining operations, providing a full spectrum of sizes, shapes, and qualities.
Diverse Assortment
Unsorted parcels containing a wide variety of sizes, shapes, clarities, and colors.
Sold by Carat
Available in various parcel sizes, offering opportunities for wholesalers and cutters.
Direct from the Mine
Acquire diamonds in their most natural state, before any sorting or processing.
Ethically Sourced
All parcels are fully compliant with the Kimberley Process and ethical standards.
Industrial Diamonds
We also supply industrial-grade diamonds, including bort and carbonado. Valued for their extreme hardness, these diamonds are essential for manufacturing cutting tools, abrasives, and drilling equipment.
Superior Hardness
Primarily bort and carbonado, selected for exceptional hardness and abrasive qualities.
Consistent Quality
Graded for industrial use to ensure reliable performance in cutting, grinding, and drilling.
Bulk Availability
Available in large quantities to meet the demands of industrial manufacturing.
Full Compliance
Sourced and exported in full compliance with international regulations.
Diamond Product Specifications
We offer run-of-mine parcels that provide a diverse range of natural diamonds.
Gem-Quality Diamonds
For Jewelry & Investment
- QualityHigh-clarity stones
- ColorsD-Z, including fancy colors
- UseCutting for jewelry
- OriginDRC, West Africa
- CertificationKimberley Process
Run-of-Mine Parcels
Unsorted & Diversified
- ContentMixed qualities & sizes
- Sizes0.1 to 10+ Carats
- UseWholesale sorting
- OriginDRC, West Africa
- CertificationKimberley Process
Industrial Diamonds
For Abrasive & Cutting
- TypeBort and Carbonado
- HardnessSuperior abrasive quality
- UseTooling, grinding, drilling
- OriginDRC, West Africa
- CertificationKimberley Process
A Tangible Asset with Lasting Value
Rough diamonds offer a unique investment opportunity with benefits that differ from polished stones and other commodities.
High Value Density
Diamonds are a highly concentrated form of wealth, making them easy to store and transport.
Global Demand
Consistent demand from jewelry manufacturing, industrial applications, and investment sectors.
Portfolio Diversification
A tangible asset that provides a hedge against market volatility and inflation.
Unique Asset Class
Each rough diamond is unique, offering value beyond its simple weight and grade.
Diamond FAQs
Your questions about sourcing rough diamonds, answered.
Get Access to Raw Diamond Parcels
Contact our specialists to discuss your rough diamond requirements. We provide access to quality, ethically-sourced parcels for your business needs.