Diamond Certification
The Cullinan Mark
Certified Hallmarks
Mark Cullinan (MRC) and Cullinan Diamonds (CD) have hallmarks registered in the London Assay office and the Edinburgh Assay office for the hallmarking of gold, silver and platinum with the relevant assay markings. These markings certify the purity of the precious metals used. They are also compliant with National and International regulations.
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