Diamonds Standards Organization (DSO) protects professionals and reassures customers on ethical sourcing.

DSO is a Swiss non-profit international organization set up to safeguard consumers and professionals around the world on the ethical compliance of natural polished diamonds.

DSO promotes ethical sourcing and Kimberley Process Certification Scheme (KPCS). Diamonds Standards Organization is a registered civil society on the United Nations (UN) Department of Economic and Social Affairs (DESA) registry.

DSO facilitates trade by standardizing ethical compliance in natural polished diamonds and gemstones. All industry professionals that operate under the international trade regulations are eligible for membership.

DSO Members comply with the international trade regulations. DSO Certified Ethical Traders may assign Certificate of Ethical Compliance to diamonds and gemstones in accordance with the DSO Professional Code of Practice.