A trade desk in Mumbai, built for jewellers abroad.
The Carat Source sits inside Bharat Diamond Bourse, the largest diamond exchange in the world, with production partners across Mumbai's jewellery district. We work for independent jewellers who want a back end as careful as their front of house.
Nine of every ten diamonds in the world are cut and polished in India. Most of them pass through this building.
- The bourse
- Around 2,500 offices under one roof. We see goods in person the same day a brief arrives, and compare stones side by side rather than on a screen.
- Laboratories
- GIA and IGI operate laboratories in Mumbai. Stones are certified and inscriptions verified before they travel.
- Manufacturing
- Mumbai's workshops produce for houses on three continents. Our partners are chosen for finish and consistency, not for price.
- Experience
- More than a decade inside the bourse, sourcing and quality-checking goods for suppliers to some of the most exacting jewellery houses in the world.
Under your name
Your client never hears from us. Renders, reports and parcels carry your name or no name at all.
In person
Every stone is seen under the loupe before it is offered. Every piece is checked against its specification before it is packed.
Explicit
Natural and lab-grown goods come from separate channels and are described as what they are, on every document.
Accountable
One point of contact for sourcing, production and paperwork. One landed number. Updates at every stage.
- Sanctions
- No Russian-origin diamonds. Origin declarations accompany every shipment, with traceability evidence for stones of 0.50 ct and above as EU and UK rules require.
- Certification
- GIA or IGI reports for centre stones and matched pairs. Report numbers verified against laser inscriptions.
- Insurance
- Every parcel is insured door to door for its invoiced value.
- Documents
- Export invoice, packing list and declarations prepared for your broker before the parcel lands.
- Your data
- Client details you share with us stay with us. We do not market to your clients, ever.
Talk to the desk.
A twenty-minute call is the fastest way to see whether we fit the way you work.