| Comparison | Gold Filled | Gold Vermeil | Gold Plated | Solid Gold |
|---|---|---|---|---|
| Base Material | Brass/copper core with bonded gold layer | 925 Sterling Silver base | Brass, copper, alloy, or stainless steel base | Solid gold alloy throughout |
| Gold Application | Mechanical bonding with heat and pressure | Electrolytic gold plating | Thin electroplating | No separate gold layer |
| Gold Standard | Gold layer ≥5% of total metal weight (1/20 standard) | Gold layer ≥2.5μm, 10K+ gold | No universal minimum thickness | Entire piece made from gold alloy |
| Durability | High durability among demi-fine options | Moderate to high with proper care | Lower durability | Highest durability |
| Category | Demi-Fine Jewelry | Demi-Fine Jewelry | Mainly Fashion Jewelry | Fine Jewelry |
| Best For | Long-lasting gold appearance at accessible pricing | Premium silver-based gold jewelry | Trend-focused affordable styles | Lifetime and heirloom pieces |
