Lab-grown rough brokering is a newer, smaller trade than polished brokering

Trading lab-grown rough between growers and cutters, rather than finished polished stones, remains a much smaller and newer trade than the well-established polished brokering business.

• Many growers cut their own rough in-house rather than selling it on, which limits the pool of rough actually available to independent brokers compared to the natural rough trade.
• Where rough does trade independently, pricing is closely tied to growth method and reactor run quality, factors a broker has to assess without centuries of established grading convention to lean on.
• The trade is expected to grow as more independent cutting capacity comes online specifically to serve growers who don't cut their own production.

This mostly affects supply timing rather than anything visible to a buyer of finished stones — contact us if you have questions about how a specific lab-grown stone was sourced and cut.