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Radiant Starburst Octagon Diamond Pendant — 3D CAD Model for Jewelry Manufacturing
*** All Files Types Include
Design Overview
This pendant is built around a bold sunburst motif — a dense arrangement of crisscrossing linear bars radiating outward from a central round brilliant diamond, all contained within a faceted octagonal silhouette. The 6-prong center setting holds a 5.00mm round stone (approximately 0.47ct total weight) elevated slightly forward of the openwork frame, so light can pass through the geometric lattice behind it and play across the stone's facets. The reverse side reveals a stepped, beveled octagon plate with a scalloped, gear-like rim, giving the piece a distinct architectural profile from every angle — front, back, and side. A curved bail with a rounded jump ring connects to a fine cable chain, and the overall silhouette reads as modern and graphic while still feeling wearable as an everyday statement piece. The design translates cleanly across yellow gold, white gold, and rose gold finishes, as shown in the included renders, and photographs equally well as a polished or satin-finished piece.
3D Modeling Details
The file was modeled with jewelry-grade precision in mind, with clean, manufacturable geometry, accurate prong placement, and a properly seated gemstone. Verified dimensions include an overall pendant drop of 16.50mm, a width of 11.50mm, a bail height of 4.50mm, and a stone diameter of 5.00mm, with the bail measuring 3.50mm at its widest point — all confirmed through native CAD measurement and metal-weight reporting tools. Wall thicknesses, prong heights, and the openwork lattice have been checked for structural integrity so the piece holds up to casting and everyday wear rather than existing as a purely decorative render. The model is supplied watertight and print-ready, with the gemstone modeled as a separate, correctly proportioned round brilliant for easy swapping to other carat weights or stone shapes. Files are provided in native 3DM format along with STL, OBJ, and other common exchange formats, making the model compatible with Rhino, Matrix, 3Design, ZBrush, and most major jewelry CAD and general 3D software.
Manufacturing Suitability
This design is fully prepared for real-world production, whether through direct 3D wax/resin printing for lost-wax casting or through CNC and traditional bench fabrication referencing the CAD geometry. The file has been tested against a metal-weight calculator across a range of alloys — including 9K, 10K, 14K, and 18K white gold, sterling and continuum silver, and 10K rose gold — giving manufacturers accurate gram and pennyweight estimates before committing to production, which simplifies costing and quoting. The scalloped rim and layered back plate are modeled with printable clearances, and the prong basket is sized appropriately to seat and secure a 5.00mm round stone (natural or lab-grown diamond, moissanite, or cubic zirconia), making the file adaptable to a range of price points and material choices without redesign.
Licensing & Sales
This CAD file is offered as a ready-to-use asset for jewelry designers, manufacturers, 3D printing services, and online retailers looking to add a distinctive statement pendant to their catalog without starting from scratch. It suits businesses producing fine jewelry, fashion-forward silver pieces, or custom commissions, and is equally useful for rendering marketing images, building a product listing, or sending straight to production. Buyers receive the complete set of files needed for both visualization and manufacturing, allowing immediate integration into an existing workflow. Please review the specific license terms of the marketplace listing regarding commercial use, resale, and exclusivity before purchase.
