NATURAL · CERTIFIED
Natural Diamonds
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Ethical Sourcing · African Expertise
Certified Diamonds & Precious Stones,
Sourced with Precision.
Loose natural diamonds and curated precious stones, sourced through trusted networks across Africa.
100% Natural Diamonds·Kimberley Certified·GIA / IGI Available·Private & Wholesale
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01The House
At the Origin
of Rarity.
Coumba Kandji Diamonds specializes in private sourcing and trade of certified loose precious stones — selected for origin, rarity, brilliance and long-term value.
Our network reaches deep into Africa and major international markets, granting access to white and fancy color diamonds, rubies, tanzanite, alexandrite, and other rare precious stones. Every inquiry is handled with discretion, professionalism, and a clear focus on quality.
100%
Natural Diamonds Only
Africa
Trusted Sourcing Networks
Private
Discreet Client Advisory
Certified
Kimberley · GIA · HRD
02Expert Focus
Loose Diamonds,
Privately Sourced.
We specialize exclusively in certified natural diamonds — individually selected, documented, and presented for private clients, jewelers, and trade partners.
From classic white to rare fancy colors, every request is handled with absolute discretion and an uncompromising commitment to quality.
01
White Diamonds
Certified natural white diamonds selected for brilliance, clarity and timeless value.
Coumba Kandji
02
Fancy Diamonds
Rare natural diamonds in distinctive colors, sourced for clients seeking exceptional and unique pieces.
Coumba Kandji
03
Private Requests
Tailored sourcing for clients looking for a specific cut, carat, color, clarity or certification.
Coumba Kandji
04
Wholesale Supply
Curated diamonds and precious stones for jewelers, dealers and wholesale partners.
Coumba Kandji
03The Process
From Trusted Source
to Certified Selection.
Every stone begins with a request, a sourcing network and a careful selection process. We review each diamond or gemstone according to its natural origin, quality, documentation and suitability for the client.
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- I
Sourcing
Natural diamonds and precious stones are sourced through trusted African and international networks.
- II
Selection
Each stone is reviewed for quality, rarity, proportions, visual character and client requirements.
- III
Certification
Kimberley certification and recognized gemological documentation such as GIA / HRD are provided where applicable.
- IV
Private Presentation
Selected stones are presented through private consultation with discretion and professional care.
04Offering
Rare Precious Stones & Diamonds,
Selected for Exceptional Value.
From certified natural diamonds to rare fancy colors, Coumba Kandji sources exceptional precious stones for private collectors, jewelers, and wholesale partners.
While our primary focus is on loose stones, bespoke jewelry design is available upon request once your gem is selected.
FANCY COLOR · RARE
Fancy Color Diamonds
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PRECIOUS STONES · CURATED
Colored Precious Stones
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BESPOKE · UPON REQUEST
Bespoke Creation
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05Trust & Documentation
Documented Provenance,
Verified Quality.
Every diamond and precious stone we present carries recognized documentation — Kimberley certification, GIA or HRD grading reports where applicable, and clear origin information. Nothing left to trust alone.
- IKimberley-certified natural diamonds
- IIGIA / HRD documentation where applicable
- IIINatural origin focus
- IVPrivate and professional handling
- VTransparent stone specifications
06Why Coumba Kandji
Seven reasons clients
buy again and again.
01Coumba Kandji
100% Natural Diamonds
No lab-grown, no compromise. Every stone we trade is Earth-formed, traceable and selected for long-term value.
02Coumba Kandji
Certified Provenance
Kimberley-certified diamonds with GIA / HRD documentation where applicable — paperwork our clients can rely on.
03Coumba Kandji
Direct African Sourcing
Trusted networks at origin across Africa, paired with international partners — fewer intermediaries, sharper pricing.
04Coumba Kandji
Rare Stones, On Request
Access to colored diamonds, fancy yellows, rubies, tanzanite and rare finds most dealers cannot reach.
05Coumba Kandji
Private & Wholesale
We serve collectors, jewelers and trade partners equally — with terms calibrated to each relationship.
06Coumba Kandji
Discretion as Standard
Every inquiry is handled confidentially. Your sourcing, your specifications and your decisions stay yours.
07Coumba Kandji
Personal Advisory
One direct point of contact from first inquiry to private presentation — no call centers, no handoffs.
The Promise
Natural diamonds, sourced with integrity, presented with discretion — without compromise.
07Private Inquiry
Request a Private
Diamond Consultation.
For natural diamonds, precious stones, wholesale sourcing or private requests, please send us your inquiry. Each request is reviewed personally and handled with discretion.
Tell us what you are looking for — including stone type, carat range, preferred certification, budget range or sourcing purpose. We will review your request and respond with the next steps.