Why Some Jewelry Turns Green While Others Stay Shiny-The Science Behind It

You’ve likely seen it happen to yourself or someone else. Wear a ring, bracelet, or necklace for a few days and suddenly you find yourself with an ugly green mark underneath your jewelry. Naturally, you might worry to think that like- Is my jewelry fake? Is it toxic? Should I take it off?

Here’s the good news: green stains on your skin aren’t harmful. However, they do say a lot about your jewelry.

Let’s discuss.

Why Does Jewelry Turn Your Skin Green?

When certain metals present in jewelry come into contact with moisture (such as sweat), lotion, soap, natural bodily oils, or other outside substances, a chemical reaction occurs that results in a green color. Most fashion jewelry contains copper or copper-based alloys. When copper is exposed to oxygen, water, and the natural acids found in your sweat, it forms metal compounds. These compounds are what actually leave a green residue on your skin. The jewelry itself doesn’t color your skin green. Rather, the chemical reaction produces compounds that temporarily deposit onto your skin.

Is Green Skin from Poor-Quality Jewelry?

It’s not always the case, but more often than not yes. Fashion jewelry made from cheaper metals will typically contain metal alloys that oxidize and corrode quicker. Because of this, wearing your jewelry every day or in hot and humid climates will become more of an issue. As mentioned above, the quality of both the base metal and coating will determine whether or not your jewelry will tarnish or leave marks.

Why Does Sweat Make It Worse?

Sweat is made up of water, salts, and natural acids. When these substances make contact with your jewelry, they accelerate the oxidation process. This is why you will commonly see green stains after working out, during warmer seasons, or if you live in a humid climate. The more you wear your jewelry during these times, the more likely it will react with sweat and moisture.

Will All Jewelry Turn Green?

Not necessarily. The easiest way to prevent your jewelry from turning your skin green is by wearing jewelry made with corrosion-resistant metals. At Tanishra, we use 316L surgical-grade stainless steel paired with a vacuum sealed PVD coating. This premium blend allows us to manufacture jewelry that is resistant to sweat, moisture, tarnish, and discoloration.

Traditional fashion jewelry contains metals that will react when exposed to the elements on your skin. 316L stainless steel used by Brands like Tanishtra is built for daily wear.

The Bottom Line

Witnessing green color on your favorite Jewelry pieces can be frustrating. It is a sign that the jewelry's base materials are reacting to air, sweat and moisture in the environment. Hence once you have understood the science behind these reactions, it can help consumers make buying decisions which they will not regret later.