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Graduated Diamond Bar Necklace — 9-Stone Curved Pendant with Cable Link Chain | 3D CAD Model (.3dm, .stl, .obj)
*** All Files Types Include
Design OverviewThis piece is an elegant graduated diamond bar necklace featuring nine round brilliant-cut stones set in a gently curved horizontal line that follows the natural curve of the collarbone. The center stone (3.00mm) anchors the composition, flanked symmetrically by pairs of diamonds stepping down in size — 2.50mm, 2.00mm, 1.50mm, and 1.20mm — creating a refined, sparkling cascade effect from center to edge. Each stone sits in a delicate shared-prong setting with beaded gallery detailing along the bar, giving the design texture and light-play even between the gems. The bar connects seamlessly into a fine cable-link chain, finished with a secure clasp, making this a versatile everyday-luxury pendant suitable for layering or wearing alone. The model is shown rendered in both yellow gold and white gold finishes, demonstrating how well the design adapts across metal tones.
3D Modeling DetailsThe file is a fully constructed, manufacture-ready 3D CAD model built with accurate real-world proportions and clean, printable geometry. Technical drawings confirm precise measurements: an overall bar width of 23.00mm and individually specified stone diameters (1.20mm, 1.50mm, 2.00mm, 2.50mm, and 3.00mm) positioned symmetrically along the curve. The gem reporter data confirms 9 total round diamonds with a combined weight of approximately 0.32 total carats, broken down by size for accurate costing and sourcing. The mesh is built with closed, watertight solids, correctly hollowed prong and gallery structures, and clean topology suitable for direct 3D printing or CNC milling — no repair work needed. Native files are provided in Rhino 3DM format with exports available in STL, OBJ, and other common formats for cross-platform compatibility with jewelry CAD/CAM software such as Matrix, RhinoGold, and 3Design.
Manufacturing NotesThis design is optimized for real-world production using lost-wax casting, resin 3D printing, or direct metal 3D printing (DMLS/SLM). Metal weight calculations are included for a wide range of alloys — 9K, 10K, 14K, and 18K white gold, sterling silver, and rose gold — with gram, DWT, and specific gravity values pre-calculated to assist with quoting and material planning (approximate finished weight ranges from 0.62g to 0.94g depending on alloy selected). The prong and gallery wall thicknesses have been modeled with production tolerances in mind, ensuring stone security and structural integrity after casting and stone-setting. The file is equally suited to CAD-to-wax printing for traditional casting workflows or high-resolution resin printing for direct-to-metal or master-pattern production.
Sales & LicensingThis CAD file is ideal for jewelry manufacturers, private label brands, independent designers, 3D printing services, and online jewelry retailers looking to add a polished, market-ready graduated diamond necklace to their catalog without starting from scratch. It is delivered print-ready and pre-optimized for immediate use in prototyping, small-batch casting, or full production runs, saving significant design and modeling time. Buyers receive a versatile, resizable base file that can be adapted to different metals, stone counts, or chain lengths, making it a strong addition to jewelry CAD marketplaces, print-on-demand platforms, and B2B design libraries alike.
