George Boyle
Sterling silver is a popular choice for wedding bands due to its affordable price and wide range of designs. However, one common concern is whether wearing a sterling silver ring will cause the wearer's finger to turn green. This phenomenon occurs due to a chemical reaction between the metal and the skin, often caused by copper, which is usually included in sterling silver to make it more durable. While it is not an allergic reaction, it can develop into a copper allergy if not addressed. There are several methods to prevent and remove discolouration, including coating the inside of the ring with clear nail polish, avoiding moisture, and cleaning the ring with various solutions.
| Characteristics | Values |
|---|---|
| Cause of skin discoloration | Chemical reaction between the metal and the skin |
| Metals causing skin discoloration | Copper, Nickel |
| Other causes | Perspiration, moisture, natural oils, hand cream |
| Prevention | Coating the inside of the ring with clear nail polish, removing the ring before showering, washing hands, swimming, etc. |
| Cleaning | Water and ammonia solution, white vinegar and water solution, metal polish |
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What You'll Learn
Sterling silver composition
Sterling silver is an alloy composed of 92.5% silver and 7.5% other metals, usually copper. The remaining 7.5% can also include metals such as zinc, nickel, and real silver. The sterling silver standard has a minimum millesimal fineness of 925, which is why you may see "925" stamped on the inside of a ring to indicate that it is made of sterling silver. Fine silver, which is 99.9% pure silver, is relatively soft, so silver is typically alloyed with copper to increase its hardness and strength. Sterling silver is a good conductor of heat and electricity and has good machinability, malleability, and ductility.
Copper is a common metal used in sterling silver and can contribute to skin discoloration. When sterling silver tarnishes, it undergoes a chemical reaction with sulfur compounds in the air, forming a dark layer of silver sulfide. The alloys in white gold and sterling silver can easily react to the skin's sweat and acids, and metals like nickel and copper can cause allergic reactions, turning your skin green or black. Nickel is a common alloy used in white gold and tungsten carbide rings, while copper is commonly used in sterling silver. If you have a nickel allergy, you may want to opt for platinum or palladium wedding bands, as these metals are not alloyed with nickel. A more affordable alternative is cobalt chrome rings.
Recently, a new silver alloy called Argentium Silver has emerged, which does not tarnish like traditional sterling silver rings. Instead of copper, this alloy uses germanium, which does not react with the skin's acids. Other elements used in alloys to reduce tarnishing include zinc, platinum, silicon, and boron. Examples of these alloys include argentium, sterlium, and silvadium.
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Tarnishing and discolouration
Sterling silver is an alloy composed of 92.5% silver and 7.5% other metals, such as copper and zinc. While sterling silver is a popular choice for jewellery, it can tarnish and discolour over time.
Tarnishing occurs when sterling silver undergoes a chemical reaction with sulfur compounds in the air, forming a dark layer of silver sulfide. This process is accelerated by the presence of copper in the alloy, which also contributes to skin discolouration. The copper in sterling silver can react with the pH levels on your skin, creating a green colour where the skin and metal meet. This reaction is more likely to occur when the skin is damp or wet, and water gets trapped between the skin and jewellery.
To prevent discolouration, it is recommended to remove sterling silver jewellery before engaging in activities that involve water, such as showering, swimming, or cleaning. Applying clear nail polish to the inside of the ring creates a barrier between the silver and the skin, reducing the likelihood of discolouration. However, this method is not permanent, and the nail polish may need to be reapplied over time.
In some cases, the discolouration may be due to an allergic reaction to the metals in the alloy, such as nickel or copper. Individuals with allergies to these metals may consider alternative jewellery options, such as platinum or palladium wedding bands, which do not contain nickel.
It is important to note that tarnishing and discolouration are not indicators of low-quality materials in sterling silver jewellery. With proper care and maintenance, including regular cleaning with mild solvents and polishes, sterling silver jewellery can retain its appearance and last a lifetime.
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Allergic reactions
Sterling silver is composed of 92.5% silver and 7.5% other metals, most commonly copper and zinc. While sterling silver is a popular jewellery choice, it does have a higher tarnishing rate due to the copper in the silver-copper alloy. When sterling silver tarnishes, it undergoes a chemical reaction with sulfur compounds in the air, forming a dark layer of silver sulfide. This chemical reaction can cause skin discolouration, turning your finger green.
However, this discolouration is not an allergic reaction. In rare cases, a person can develop a copper allergy if the problem is not dealt with in a timely manner. If you are one of the few people allergic to nickel, an alloy commonly used in sterling silver, you may want to consider platinum or palladium wedding bands, as these metals are not alloyed with nickel. Cobalt chrome rings are a more affordable alternative. A new silver alloy, called Argentium Silver, uses germanium as an alloy instead of copper and will not react with your skin's acids.
To prevent skin discolouration, you can coat the inside of your sterling silver rings with clear nail polish, creating a barrier between the silver and your skin. However, this is not a permanent fix, and you will have to reapply the nail polish as needed. You should also remove your sterling silver rings before showering, washing your hands, or swimming, as water and moisture can cause oxidation and discolouration.
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Moisture and oxidation
Sterling silver is composed of 92.5% silver and 7.5% other metals, most commonly copper and zinc. While sterling silver is a popular choice for jewellery, it tends to tarnish and change colour over time. This is due to the copper content, which reacts with the skin's pH levels and natural oils, as well as with moisture and chemicals such as those found in hand cream, detergents, and chlorinated water. This reaction causes skin discolouration, leaving a green or black mark on the finger.
Moisture can cause oxidation and skin discolouration when water gets trapped between the skin and the jewellery. This is why it is recommended to remove sterling silver rings before swimming, showering, or washing hands. The chlorine in pool water can cause permanent damage to silver rings, and the trapped moisture can cause a green tint on the skin. To prevent this, some people coat the inside of their rings with clear nail polish to create a barrier between the silver and the skin. However, this is not a permanent solution, and the nail polish will need to be reapplied periodically.
In addition to moisture, the presence of other chemicals can also contribute to oxidation and discolouration. For example, the use of hand cream can cause the metal to oxidise, even if the skin is not typically sensitive. Detergents and chemicals found in household cleaning products can also react with the metal, resulting in discolouration. Therefore, it is advisable to remove rings before engaging in activities involving these chemicals.
While oxidation and discolouration are common issues with sterling silver jewellery, it is important to note that they are not indicative of low-quality materials. Sterling silver is prone to tarnishing due to its composition, and proper care can help minimise these issues. Regular cleaning with a mild soap and water solution or a specialised jewellery cleaner can help remove any built-up tarnish and restore the original colour of the silver. Additionally, storing jewellery in a cool, dry place when not in use can help slow down the tarnishing process.
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Preventing discolouration
Sterling silver is an alloy composed of 92.5% pure silver and 7.5% other metals, such as copper, zinc, and nickel. While sterling silver is a popular choice for jewellery, it tends to tarnish and change colour over time. The copper in the silver-copper alloy reacts with the pH levels on your skin, creating a green colour where your skin and the metal meet. This is a chemical reaction and is not an allergic response.
There are several ways to prevent this discolouration:
- Coat the inside of your ring with clear nail polish to create a barrier between the silver and your skin.
- Remove your ring before you shower, wash your hands, or swim, as water and chlorine can cause oxidation and discolouration.
- Avoid wearing your ring over damp or wet skin, as moisture can also cause oxidation and discolouration.
- Clean your ring regularly with a 50/50 mix of water and ammonia, or white vinegar and water for tougher stains.
- If your ring is uncoated, the tarnish may be the cause of discolouration. In this case, consider rhodium-plated rings, or rings made of stainless steel, platinum, or Argentium Silver, which does not contain copper.
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Frequently asked questions
Sterling silver is composed of 92.5% silver and 7.5% other metals, most commonly copper and zinc. Copper reacts with the pH levels on your skin, creating a green colour where your skin and the metal meet.
One way to prevent discolouration is to coat the inside of your ring with clear nail polish, creating a barrier between the silver and your skin. Another option is to purchase a ring made from rhodium-plated rings or stainless steel and platinum, as these metals will not react with your skin.
The discolouration is not permanent and should fade within a few hours. If you want to speed up the process, you can wash your hands with warm water and liquid soap.
Yes, you should avoid wearing your ring when your skin is damp or wet, as this will increase the chances of discolouration. It is recommended to remove your ring before showering, swimming, or washing your hands.
