WDC's Expanded Warranty to Cover Human Rights, Corruption, Money Laundering December 22, 20 by John Jeffay (IDEX Online) - The World Diamond Council says 200 companies are currently trying out its newly-updated rules on responsible sourcing. It hopes to roll out its new System of Warranties (SoW) - pictured - early next year, requiring sellers at every point in the supply chain - polished as well as rough - to include a statement on B2B invoices a nd memos guaranteeing that the diamonds are Kimberley Process-compliant. It has broadened the original SoW, introduced in 2002, to cover human a...