What Jewellery Goes Green?
Jewellery is meant to be timeless, but sometimes you may notice that your favourite pieces have developed an unsightly green tint. So, what jewellery goes green, and why does this happen? This phenomenon occurs due to certain metals in the jewellery reacting with your skin, moisture, or air, causing a green discolouration. Let’s explore which types of jewellery are prone to going green and how to prevent it from happening.
1. Copper and Copper Alloys
Copper is one of the most common metals that cause jewellery to turn green. When copper oxidises (reacts with oxygen in the air), it forms a green patina, which can transfer to your skin. Copper is often used in jewellery, either on its own or as part of an alloy (a mix of metals), such as bronze or brass. This green tint is often harmless but can be annoying, especially if it leaves a noticeable mark on your skin.
Common Copper Jewellery: Copper bracelets, necklaces, and rings are prone to turning green, especially if they are worn frequently.
2. Low-Karat Gold
Low-karat gold (such as 10k or 12k gold) contains a significant percentage of other metals, often including copper, which can cause the jewellery to tarnish or turn green. The higher the karat, the more pure gold the piece contains, making it less likely to react with your skin.
Tip: If you love the look of gold but want to avoid the green tint, opt for higher-karat gold, like 18k or 24k, which contains less copper and other reactive metals.
3. Bronze and Brass Jewellery
Bronze and brass are both alloys that contain copper, which means they are also susceptible to going green over time. These metals are popular for their warm, golden colour, but when they react with moisture, sweat, and oils from your skin, they can leave behind a greenish residue.
Tip: Prevent your bronze and brass jewellery from going green by regularly cleaning it and storing it in a jewellery storage box to reduce exposure to air and moisture.
Why Does Jewellery Turn Green?
Jewellery turns green when certain metals in the piece react with elements like air, water, or even the natural oils on your skin. Copper is the main culprit for this reaction, as it forms copper salts (green compounds) when it oxidises. These salts can rub off on your skin, creating a greenish tint.
Moisture, sweat, and lotions can accelerate this process, making it more likely that your jewellery will turn green faster. The reaction is typically harmless, though it can cause mild irritation for those with sensitive skin.
How to Prevent Jewellery from Turning Green
While some metals naturally go green over time, there are a few steps you can take to prevent or slow down the process:
Apply a Clear Coat: Coating your jewellery with clear nail polish can create a barrier between your skin and the metal, preventing it from reacting and turning green.
Keep Jewellery Dry: Avoid wearing your jewellery in humid environments or when swimming, as moisture speeds up oxidation. Store your pieces in a dry place, such as a leather jewellery box or travel jewellery case.
Clean Your Jewellery Regularly: Regular cleaning can help remove any oils, dirt, or moisture that contribute to tarnishing. Use a soft cloth to gently polish your jewellery and keep it looking its best.