With the 5th C (C for Confidence) the “Bureau of Minerals and Gemmology” guarantees to the consumer that the diamonds sold by the “5 C’s “label holder originates from conflict and criminal free origin and are mined and cut in accordance of prevailing standards of hygiene and safety excluding child labour. BMG also guarantees that the label holder does not sell treated, manipulated or synthetic diamonds. More info: info@5c-confidence.org