This Ring from their Jovian collection is designed by Marianne Helgstrand and handcrafted in 18 Kt. white gold. Material: Whitegold Karat: 18K Stone: No stone Available sizes: 48,49,50,51,52,53,54,55,56,57,58,59,60 Does it come with certificate? Yes Can the piece be engraved? No Typically, this piece is ready to ship within 1 week. However, for certain sizes or variants, there may be a longer delivery time as the designer maintains a limited stock. If your order requires additional time, you will be promptly informed.