The System of Warranties (SoW), mandatorily affixed to all invoices or memos, activates each time a diamond - whether rough or polished, loose or set in jewellery - is transferred between parties. It serves as a corporate assurance that the sourced diamond complies with the Kimberley Process Certification Scheme (KPCS), aligning with globally recognised standards for human and labour rights, anti-corruption, and anti-money laundering practices. The SoW is a cornerstone of corporate responsibility in the diamond trade, embodying a commitment to ethical sourcing and transparent business operations.