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UMA S.A

Rough diamond trading

Key players and steps of the rough diamond trade, from mining to jewellery.

As a major player in the rough diamond trade, we facilitate access to these precious gems from verified sources. The rough diamond trade is a complex, regulated sector involving many players and steps.

Key players

  • Miners

    Companies that extract rough diamonds.

  • Brokers

    Intermediaries who connect sellers and buyers of rough diamonds.

  • Traders

    Companies that buy and resell rough diamonds.

  • Cutters

    Companies that cut and polish rough diamonds.

  • Jewellers

    Companies that create jewellery with cut diamonds.

Steps of the trade

  1. 1

    Mining

    Rough diamonds are extracted from mines.

  2. 2

    Sorting

    Rough diamonds are sorted by quality, size and colour.

  3. 3

    Certification

    Rough diamonds are certified by independent bodies such as the Gemological Institute of America (GIA).

  4. 4

    Sale to brokers

    Miners sell the rough diamonds to brokers.

  5. 5

    Sale to traders

    Brokers sell the rough diamonds to traders.

  6. 6

    Cutting and polishing

    Rough diamonds are cut and polished by cutters.

  7. 7

    Sale to jewellers

    Cut diamonds are sold to jewellers.

  8. 8

    Jewellery making

    Jewellers create jewellery with the cut diamonds.

The rough diamond trade requires deep expertise and a sound understanding of the regulations and associated risks.

Need help acquiring precious metals or rough diamonds?

Our experienced teams answer your questions, guide you through the buying process and offer solutions tailored to your needs.

Contact us