- Mozambique rubies, total weight: 10.48-carats; round and marquise-cut E-F VVS diamonds, total weight: 1.97-carats - Butterfly fastening for pierced ears - Come in a designer-stamped box - This piece has been certified in accordance with the Hallmarking Act 1973 - NET-A-PORTER is a certified member of the Responsible Jewellery Council