Check the listing for details. Da Vinci Platonic Octahedron 3D Geometric Model 4" Polyhedron Interior Accent. Color: Brown, Condition: New. Listed at 34.99 USD. This high quality, Da Vinci Octahedron 3D Geometric Wooden Model is brand new, fully assembled and ready for display (not a kit). This Da Vinci Octahedron 3D Geometric Figurine Model is handcrafted of solid aged Mahogany wood with intricate hand crafted joints. The Da Vinci Octahedron has a polished, varnished finish. The model is gift boxed. Try using them to frame an antique chess piece, a beautiful mineral, an object you cherish and want to display properly! They are sure to have tremendous appeal as a 3D Geometric addition to any decor and to become a treasured family heirloom. Overall Size: 4" (10 cm) Length x 4" (10 cm) Width x 4" (10 cm) Height, Material: Mahogany wood, Construction: Handcrafted, Aged polished and varnished finish, Gift boxed.