Precious Metals• Published: September 2, 2026
Precious Metals Metallurgy: Platinum, 14K/18K Yellow, White & Rose Gold
Gemological Review: Graduate Gemologist & Master Bench Jeweler Directorate • GIA & RJC Verified
Understanding precious metal alloy composition guarantees your fine jewelry withstands decades of daily wear without warping or skin irritation.
1. Fine Jewelry Metal Alloy Characteristics
| Metal / Alloy | Purity / Composition | Hardness & Durability | Maintenance Requirements |
|---|---|---|---|
| Platinum (PT950) | 95% Pure Platinum / 5% Ruthenium or Iridium | Highest Density; Develops satin patina | Hypoallergenic; Never requires replating |
| 14K White Gold | 58.3% Pure Gold + Nickel/Zinc/Silver Alloys | High tensile strength; highly scratch-resistant | Rhodium electroplating every 18–24 months |
| 18K Yellow Gold | 75.0% Pure Gold + Copper & Silver | Rich buttery yellow hue; medium hardness | Occasional polishing; hypoallergenic |
| 14K Rose Gold | 58.3% Pure Gold + Copper Alloys | Very hard due to copper content; vintage tone | Zero replating; exceptionally durable |
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Authored by the Jewelry For Beauty Gemological Directorate
Our editorial board features GIA-certified Graduate Gemologists (GG), master diamond cutters, and high-jewelry CAD designers. We specialize in 4Cs diamond valuation, optical light performance, precious metal metallurgy, and vintage jewelry authentication.