The WFDB (World Federation of Diamond Bourses) is the global representative body for diamond exchanges, comprising member bourses and trading forums worldwide, including key participants in the UK market. It sets standards for trading ethics, certification, dispute resolution, and industry advocacy—shaping how diamonds are bought, sold, and regulated. Jewellery Focus provides specialist coverage on WFDB’s influence within the UK trade: including its regulatory guidance, membership services, anti-money laundering initiatives, ethical sourcing frameworks, and dispute-settlement mechanisms. We highlight how WFDB policies affect UK retailers, wholesalers, and diamond dealers, offering insights on compliance, market access, and best practice in the international diamond trade.