Decree no. 25/2015, of 20 November ("Regulation of Sale of Diamonds, Precious Metals and Gemstones") comes into force on 20 November 2016 and repeals Decree no. 20/2011 of 1 June (the previous "Regulation of Sale of Mineral Products"). The aim of the new Decree is to adjust the Mozambican legal rules on mechanisms for certifying the origin of rough diamonds, precious metals and gemstones, and to define rules for their sale and control that comply with the international requirements established under the Kimberley Process (Kimberley Process Certification Scheme or KPCS).