- Blackened F-G VS-VVS diamonds, total weight: 1.23-carats; marquise-cut F-G VS-VVS diamonds, total weight: 1.08-carats; round-cut F-G VS-VVS diamonds, total weight: 0.34-carats - Lobster clasp fastening - The black color of these diamonds is the result of an artificial treatment process - This piece has been certified in accordance with the Hallmarking Act 1973