About 3DM files
Mesh objects are rendered directly. Surfaces, polysurfaces and extrusions need saved render meshes. In Rhino, switch the viewport to Shaded or Rendered, wait for meshing to finish, then save normally (not Save Small, which discards render meshes). If the studio reports objects without render meshes, either re-save that way or export the design as STL (File → Export Selected → STL). SubD objects are approximated from their control net. Curves, points, text and lights are listed but not rendered. Hidden layers and hidden objects are imported but start hidden.
About materials and gems
STL contains shape only, so all parts start as the studio metal. For 3DM, “File materials” uses the colours saved in the file where available. Gemstone materials are a real-time approximation (refraction and colour, no caustics or fire) and are intended for composition rather than certified stone imagery.
About the weight estimate
Volume is computed from the mesh with the divergence theorem after welding vertices. A part is only counted when it is a closed, consistently oriented shell; open or damaged shells are reported and left out. When parts overlap (a head sunk into a shank, prongs into a bezel) the overlap is measured and subtracted so material is counted once. Densities default to 15.50 g/cm³ for 18kt and 17.80 g/cm³ for 22kt and can be edited. Treat the result as a CAD estimate, not a finished weight.
This studio is an independent tool built for Shree Taru Jewels. It is not connected to or affiliated with iJewel3D.
Three.js (MIT) and rhino3dm (MIT) — licence notices are included in the vendor folder.