Single Mine Origin (SMO) denotes gold that has been produced by a legitimate mining operation which holds no ties to conflict, where miners are paid a just wage under secure employment. All of our 9ct and 18ct gold signet rings use this sustainably sourced gold, which guarantees that the communities living locally to the gold source are benefitting from sustainability initiatives including programmes centred on education, healthcare, safe drinking water and agricultural prosperity to support a wide number of people.