Open Heart Diamond Pendant CAD Model | Casting Ready

Description

This open heart diamond pendant CAD model presents a hollow heart silhouette bordered by alternating round and marquise diamonds in a shared prong setting. The slim, continuous frame geometry supports a casting ready open heart pendant build with minimal post-cast cleanup.

The model is available across 13 metal options, from 10K to 22K gold, platinum, and 925 silver, supporting flexible SKU expansion for retailers and CAD marketplaces. Its compact 22.81 mm (0.90″) width keeps the design wearable while maintaining strong shelf and thumbnail visibility.

Marquise Round Diamond Heart Pendant 3D Model

The 3D model includes 8 marquise diamonds (4.35 mm x 2.35 mm) alternating with 8 round diamonds (five at 2.9 mm, three at 3.2 mm), totaling 0.821 CT. Shared prong settings hold each stone along the heart’s open frame for consistent finishing across production runs.

Production Analysis

• Casting Readiness: Ready — continuous open frame with no undercuts
• Stone Setting Difficulty: Medium — 16 alternating stones require aligned shared prongs
• Polishing Accessibility: High — open frame allows full tool access
• Mass Production Suitability: High
• Recommended Metals: 14K Gold (YG/WG/RG), 18K Gold (YG/WG/RG), 925 Silver

Market Fit Analysis

• US Market Fit: Strong — open heart pendants perform well across gifting occasions
• Etsy Compatibility: Strong
• TikTok Jewelry Potential: Moderate
• Pinterest Visual Appeal: Strong
• Commercial Flexibility: High — supports multi-metal SKU expansion

Product Specifications

Dimensions	22.81 mm (0.90″) x 21.60 mm (0.85″) x 4.24 mm (0.17″)
Stone Details	Diamond, 16 stones (8 Round, 8 Marquise), 2.9 mm–4.35 mm, 0.821 CT total
Metal Weight	10K Gold (YG/WG/RG): 2.84g / 2.78g / 2.86g 14K Gold (YG/WG/RG): 3.19g / 3.13g / 3.24g 18K Gold (YG/WG/RG): 3.83g / 3.64g / 3.83g 22K Gold (YG): 4.44g Platinum (PLAT/PLAT RU): 4.99g / 5.12g 925 Silver: 2.57g
Wax Weight	0.22g (manufacturing reference only)
File Formats	3DM, STL, JCD
Compatible Software	Rhino 7+, JewelCAD 5.x

Jewelry Costing: Calculate Costs with our Jewelry calculator.

FAQ

Q: Is the shared prong setting durable enough for retail diamond pendant collections?
A: Yes. The continuous frame reinforces each shared prong along the heart border, keeping the structure rigid while preserving the open, lightweight silhouette for everyday retail wear.

Q: Can this open heart pendant CAD model be produced from a single open heart pendant STL file?
A: Yes. The open heart pendant STL file supports direct wax printing and casting across multiple metals without requiring a separate model for each alloy.

Q: How many diamonds does this pendant require for production?
A: The design uses 16 diamonds total — 8 round and 8 marquise stones — set along the open heart frame for a combined weight of 0.821 CT.