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Half Halo Diamond Necklace — 3D CAD ModelProduct NameLuna Arc Half Halo Diamond Pendant Necklace — 3D CAD Design File
*** All Files Types Include
DescriptionThe DesignThe Luna Arc pendant is a modern, minimalist take on the classic halo necklace, built around a single round brilliant center stone (approximately 5.00mm) held securely in a fluted, notched bezel setting that adds textural contrast against the smooth metal surfaces. Beneath the center stone, a graceful crescent or U-shaped arc cradles seven round accent stones (1.25mm each) channel-set between raised metal bars, creating a delicate half-halo effect that appears to swing freely beneath the main gem. Twin loop bails at the top allow the pendant to hang naturally and catch light from multiple angles, giving the piece a soft pendulum-like movement when worn. The overall silhouette is compact and versatile, suitable for everyday wear as well as gifting occasions such as anniversaries, birthdays, or promise necklaces.
The 3D ModelingThis file was constructed in a professional jewelry CAD environment (Rhino/3Design-style workflow, compatible with Matrix and similar plugins) with fully closed, manifold, watertight geometry ready for production. The model includes precise gem cutouts and prong/bezel seats sized to industry-standard stone dimensions, verified with a gem reporting tool showing a total gem count of 8 stones and a total carat weight of approximately 0.52tw (one 5.00mm round center stone plus seven 1.25mm round accent stones). Overall pendant dimensions measure approximately 13.00mm wide by 9.75mm tall, with a body thickness of 1.75mm and a bail depth of 3.50mm, making it well-suited for a standard cable or box chain. Metal weight calculations are included across common alloys (10K, 14K, and 18K white, yellow, and rose gold, as well as .925 sterling silver), ranging from roughly 1.3 to 2.1 grams depending on the material selected, giving buyers accurate costing data before production.
ManufacturingThe design is fully prepared for both traditional lost-wax casting and direct 3D metal printing. Files are provided in multiple formats — including 3DM, STL, and OBJ — to support a wide range of software and production pipelines, from wax printers and resin 3D printers to CNC and direct metal laser sintering (DMLS) workflows. The bezel and channel-style gem seats are dimensioned to standard round stone sizes, allowing for straightforward stone-setting after casting, and the smooth, closed-mesh topology ensures clean printing at small scale without gaps, non-manifold edges, or self-intersecting geometry. Wall thicknesses and prong details have been designed with durability in mind, reducing the risk of breakage during casting, polishing, or stone setting.
SalesThis CAD file is ideal for jewelry designers, manufacturers, 3D printing studios, and independent sellers looking to add a ready-to-produce pendant design to their catalog without the time investment of modeling from scratch. It is well suited for listing on 3D marketplaces, print-on-demand jewelry platforms, and custom jewelry storefronts, and can be resized, remixed, or adapted to different gemstone counts, metal finishes, or chain styles to suit a brand's existing collections. Buyers receive a production-ready, print-tested file that can go directly into casting or 3D printing with minimal additional preparation, making it a practical, time-saving asset for small studios and larger manufacturing operations alike.
