18ct = 18 parts gold and six parts purities
14ct = 14 parts gold and 10 parts purities
9ct = 9 parts gold and 15 parts purities.
AllThingsGold products use the stamp mark of CCM (Common Control Mark) or also known as the Convention hallmark. Meaning the UK Assay Office recognises with all other member countries within the convention that our items adhere to UK Hallmarking laws.