The model can be used for production, for casting and machining.STLModel is ready for prototyping on CNC and 3D Printing.Round stones:D3.0- 3D1.0- 24ring size 7; 17,3Triangles All (3 parts) – 567378Vertices All – 1Metal Weight: Gold 14k – 4,22 gramsGold 18k – 4,92 grams