Engagement Ring Metals: Gold, Platinum and What Each Needs
Published . Updated . 1 minute read.
Editorial review: Karat percentages and marking rules checked against the FTC Jewelry Guides. Last reviewed .
Metal choice gets less attention than the stone, but it is what touches the skin every day. It also determines how the ring ages.
Gold karats in plain numbers
Karat measures gold content out of 24 parts. The rest of the alloy is other metals that add hardness and color.
| Marking | Gold content | Everyday notes |
|---|---|---|
| 10K | 41.7% | The lowest karat that can be sold as gold in the U.S. Hard, lighter in color. |
| 14K | 58.3% | The most common engagement ring choice; good balance. |
| 18K | 75% | Richer color, softer, more expensive. |
| 22K to 24K | 91.7% to 99.9% | Too soft for rings with set stones. |
Yellow, white and rose gold
Yellow gold is the traditional color and needs no plating. It flatters warm-colored stones and makes white diamonds look slightly warmer.
White gold is gold alloyed with white metals and usually plated with rhodium for a bright finish. Expect replating periodically, more often if the ring is worn hard.
Rose gold gets its color from copper in the alloy. It is durable and does not need plating.
Platinum
Platinum used for jewelry in the U.S. is commonly marked 950 or PLAT, meaning 95% platinum. It is noticeably heavier than gold, naturally white, and when scratched the metal is displaced rather than lost, forming a soft satin patina that can be polished away. It typically costs more to buy and to resize.
Which is right for you?
Choose by skin tone and the jewelry you already wear, then by upkeep. If you dislike maintenance, avoid white gold and choose platinum, yellow gold or rose gold. If you work with your hands, prefer 14K over 18K. For a lifestyle-first view, read the best metals for engagement rings.
Frequently asked questions
Is 14K or 18K gold better for an engagement ring?
14K is harder and less expensive, so it resists scratches and bending slightly better. 18K has a deeper color and more gold content. Both are excellent; 14K is the more practical choice for very active hands.
Why is my white gold ring turning yellow?
White gold is usually a pale yellowish alloy coated with rhodium, a bright white metal. As the rhodium wears, the warmer base shows through. A jeweler can replate it.
Which engagement ring metal is best for sensitive skin?
Platinum is generally the most hypoallergenic choice. Some white gold alloys contain nickel, a common allergen, so ask for nickel-free or palladium-based white gold if you react to costume jewelry.
Sources and further reading
- Guides for the Jewelry, Precious Metals, and Pewter Industries (16 CFR Part 23) (U.S. Federal Trade Commission, via eCFR)