While not a pure element itself, the substance commonly known as white gold is an alloy, primarily of gold, mixed with other metals.
Understanding White Gold
White gold is created to mimic the appearance of platinum, a naturally white metal. It's important to note that white gold is not a single element on the periodic table but rather a specific mixture of metals.
Composition of White Gold
- Main Component: As indicated in the reference, white gold usually consists of about 75% gold. This provides the base for the alloy.
- Alloying Metals: To achieve the desired white color and durability, other metals are added. The reference highlights that about 25% is commonly made up of nickel and zinc. However, other metals like palladium or silver can also be used, and the exact composition can vary.
- Karat Designations: White gold's purity is often measured in karats. For instance, 18 karat white gold is 75% pure gold, the same as the pure gold component in an 18 karat alloy.
How White Gold is Made
- Pure gold is relatively soft. Alloying gold with other metals increases its strength and changes its color.
- The mixing process results in a metal that is not only stronger but also has a more silvery-white appearance.
Characteristics of White Gold
- Appearance: White gold provides a bright, white finish, making it popular in jewelry.
- Durability: The addition of metals like nickel and zinc increases the hardness and durability of the gold.
- Cost: White gold is typically more affordable than platinum.
- Allergies: Nickel is a common allergen. Therefore, some people might experience skin reactions when wearing white gold that contains nickel.
Table Summarizing White Gold
| Property | Description |
|---|---|
| Composition | An alloy, primarily about 75% gold, mixed with about 25% nickel and zinc |
| Appearance | Silvery-white |
| Karat | Often available in 10k, 14k, and 18k |
| Purpose | Used for jewelry, offering a more affordable alternative to platinum |
In conclusion, white gold is not an element but a metal alloy.
