Elegant Open Heart Key Charm Necklace 3D Model
$4.00
The Open Heart Key Charm Necklace 3D Model features 18 round diamonds (~0.053 CT total) in a clean heart-outline design. Includes JCD, 3DM, and STL files. Optimized for lightweight casting, precise pavé setting, and efficient jewelry production.
Description
People don’t buy symbols.
They buy what those symbols make them feel.
The Open Heart Key Charm Necklace 3D Model is built on one of the most powerful emotional cues in jewelry—connection. But instead of relying on ornament, it uses structure, proportion, and restraint to deliver that message with clarity.
This is not decorative sentiment.
It is controlled emotional design.
A Form That Speaks Without Explanation
At the center of the design:
- A fully open heart silhouette, precisely balanced and completely hollow
- A continuous diamond-set contour, guiding the eye along a smooth, uninterrupted curve
- Two 1.0mm stones (~0.005 ct each) placed at the widest points (~0.01 CT total), reinforcing symmetry and visual weight
At the top:
- A clean V-shaped apex, reinforced with three 0.8mm stones (~0.002 ct each, ~0.006 CT total)
The result is immediate:
A symbol that reads in a fraction of a second—clear, romantic, and commercially proven.
Stone Placement That Works Harder
Nothing in this model is arbitrary. Every stone contributes to flow and structure.
Stone Configuration:
- Total Stones: 18 Round Diamonds
- 3 × 0.8mm (~0.006 CT total)
- 13 × 0.9mm (~0.037 CT total)
- 2 × 1.0mm (~0.01 CT total)
Total Diamond Weight:
- ~0.053 CT
The distribution creates:
- A continuous contour line across the heart
- A linear extension through the shaft
- A subtle transition from emotion (head) to structure (body)
Where Craft Meets Efficiency
The transition is where most designs fail. This one solves it.
- A double scroll junction, softening the shift from curved heart to straight shaft
- A slender pavé-set shaft, maintaining visual continuity without adding bulk
- A butterfly-inspired key tip, replacing rigid geometry with soft, rounded symmetry
The entire piece maintains one consistent language:
Fluid, controlled, and manufacturable.
Compact Dimensions. High Versatility.
- Dimensions: 23.80mm (L) × 9.62mm (W) × 1.70mm (T)
- Ultra-light profile—ideal for layering jewelry collections
- Optimized for mass production and daily-wear categories
Production-Ready Files
No redesign. No rework. No guesswork.
Included Formats:
- JCD (JewelCAD design file)
- 3DM (Rhino editable file)
- STL (ready for printing and casting)
Built for:
- Clean casting at small scale
- Stable micro-stone setting
- Reduced finishing and correction time
Why This Model Sells
Because it combines three high-performing elements:
- Emotion (heart)
- Symbolism (key)
- Wearability (lightweight, minimal)
It fits gift markets, everyday jewelry lines, and personalization collections—without modification.
What It Costs to Build From Scratch
Perfect heart symmetry.
Smooth curvature transitions.
Precise micro pavé alignment on thin geometry.
That’s not design.
That’s time you don’t get paid for.
Jewelry CAD modeling becomes time-consuming when working with curved forms and micro pavé layouts.
Small misalignments in curves or stone spacing lead to repeated revisions, slowing production and increasing costs.
The Open Heart Key Charm Necklace 3D Model delivers a fully engineered, ready-to-use CAD file—allowing you to skip complexity and move straight into production.
Additional information
| Paving | Paved |
|---|---|
| Gem Stone Shape | Round |

Elevate Your Creations: Teardrop Necklace 3D Model
Create Timeless Beauty Pearl Necklace Model
Stunning Gold Pearl Pendant 3D Model – Diamonds & Pearls 






