Platinum vs. 18K White Gold
- Softer than 18K white gold
- Less shiny than 18K white gold because it does not require the process of rhodium plating.
- It is naturally white and slightly matte, it will not change color over time.
- Because of its flexibility and soft nature, the labor cost is higher. It takes longer time to set platinum jewelry, as a result repairs can be more expensive.
- Platinum is also about 50% heavier than 18K gold.
- Since platinum is soft, the overall shape may become flatter or less round over time.
- Re-polishing platinum jewelry can make it look new again.
18K white gold:
- A mixture of 24K gold and other precious metals such as nickel, platinum, palladium etc. The ratio should be 75% gold and 25% other metals.
- In order to achieve the white gold color, rhodium plating is required.
- The surface is shinier than platinum.
- The material is harder than 24K gold and platinum, so without any strong impact to the surface, the shape will hold.
- Over time with regular wear and tear, it may expose a slightly yellowish color, which is the natural color of the 18K gold. It does not oxidize like silver.
- Re-plating a 18K gold ring can make it look new again.
*Featured photo is a 18K white gold ring in its natural yellowish color.