Before
After
Objective
Reduce manual polishing time while producing a high-luster finish on intricate, investment-cast 14K gold engagement rings without softening fine detail.
| Part Description | Engagement Rings – All Metal, Cross Prong, Filigree |
| Industry | Jewelry |
| Fabrication Method | Cast/Molded |
| Material | 14K Yellow Gold |
| Process Technology | Burnish, Polishing, Superpolish/Ultrapolish, Multiple Methods |
| Equipment Type | Roll Burnisher, Centrifugal Disc Finisher, Drag-Spindle Finisher, Dry Finishing |
Solution
Intricate, investment-cast 14K gold engagement rings required extensive manual polishing to achieve a bright, showroom-ready finish. Hand polishing slowed production and made it difficult to maintain consistent edge definition and surface quality across batches.
Bel Air evaluated multiple finishing methods — including centrifugal disc finishing, drag-spindle finishing, and roll burnishing — to establish a controlled, production-ready process for delicate gold engagement rings and other fine jewelry rings.
The resulting finishing workflow:
- Reduced casting texture and surface irregularities
- Preserved sharp prongs and intricate filigree detail
- Pre-conditioned surfaces for high-luster finishing
- Achieved a bright, uniform polish without softening geometry
- Significantly reduced bench polishing time
By combining controlled mass finishing with precision burnishing techniques, Bel Air delivered a repeatable process that improved throughput while maintaining the fine detail essential to premium jewelry manufacturing.
If you are unsure what equipment and media you require to achieve your desired surface finish, then send us your part, and we will evaluate it and provide you with a metrology report.