Master model for mass production (+5%). The main dimensions and inserts are shown in the image. The original NURBS Rhino 5.14 is attached. STL files are checked and ready to grow. The volume of 3D model is 127 cubic millimeters. Weight of finished product with gems (but without chain) in gold 585 (14 K) 1.6 grams in silver 925 (22 K) 1.47 grams.