Can an 18k gold earring post change color? Find out!

18k gold is a popular and classic choice for earrings due to its long-lasting shine and considerable strength. However, some wearers may notice a color change in the earring post, raising questions about the quality and care required. Today, we'll explore why this happens, whether it's a common concern, and how it can be reversed.

Why can the 18k Gold earring post change color?

1. Metal alloy: 18k gold consists of 75% pure gold and 25% other metals, such as copper, silver, or zinc, which are added to increase the gold's durability and malleability. The exact composition of these metals can influence the pin's color, especially in corrosive environments or if exposed to chemicals.

2. Oxidation and corrosion: Exposure to external agents such as sweat, beauty products, and chlorine can lead to oxidation of the metals present in the gold alloy. This oxidation can cause a color change in the earring post, resulting in a darker or tarnished appearance.

3. Chemical reactions on the skin: The chemistry of the human body is unique to each individual. In some cases, the acidity of the skin can react with the metals in the earring post, causing discoloration. This doesn't necessarily indicate inferior gold quality, but rather a specific interaction with the wearer.

Is it possible to reverse the color change?

In many cases, the color change in an 18k gold pin can be reversed with simple home care. Regular cleaning with jewelry cleaning solutions or a mixture of warm water and mild detergent can help restore the original shine. It's important to dry the pin completely after cleaning to prevent further oxidation.

For more persistent discoloration, professional polishing may be necessary. Jewelers can use specific techniques and substances to polish and remove the oxidized layer, restoring the gold's original color.

The best way to maintain the original color of your 18k gold earring post is through prevention. Avoiding contact with harsh chemicals, removing earrings during physical activity or exposure to chlorinated water, and storing jewelry in a dry, protected place can prolong its shine and prevent such changes.