Does Gold Plated Sterling Silver Tarnish? Understanding the Science Behind Gold Plating
The short answer is: yes, but much less than sterling silver alone. Gold plated sterling silver will eventually tarnish, but at a significantly slower rate than its unplated counterpart. This is because the gold plating acts as a protective barrier against the elements that cause tarnishing. However, the longevity and extent of this protection depend on several factors.
What Causes Sterling Silver to Tarnish?
Before we dive into the specifics of gold-plated sterling silver, let's understand the root cause of tarnishing. Sterling silver, an alloy of 92.5% silver and 7.5% other metals (usually copper), tarnishes when it reacts with sulfur in the air. This reaction forms silver sulfide, a dark, unsightly coating on the surface of the silver. Exposure to air pollutants, humidity, and even certain substances like rubber or cosmetics can accelerate this process.
How Does Gold Plating Affect Tarnishing?
Gold plating provides a protective layer over the sterling silver. This layer prevents direct contact between the silver and sulfur in the air, thus significantly reducing the rate of tarnishing. However, the thickness of the gold plating is crucial. A thicker layer offers more substantial and longer-lasting protection. Thin gold plating might wear off more quickly, especially with frequent handling or exposure to harsh chemicals.
How Long Does Gold Plating Last?
The lifespan of gold plating varies greatly, depending on:
- Thickness of the plating: Thicker plating lasts longer.
- Quality of the plating: A well-executed plating process yields more durable results.
- Frequency of wear: Jewelry worn daily will show wear faster than pieces stored in a jewelry box.
- Exposure to chemicals: Contact with harsh chemicals, like chlorine in swimming pools or certain cleaning agents, can damage the plating and accelerate tarnishing.
Will Gold Plated Sterling Silver Tarnish Eventually?
Even with gold plating, tarnish can eventually show. As the gold layer wears down through abrasion or chemical exposure, the underlying sterling silver becomes exposed, leading to tarnish. The rate at which this happens varies drastically depending on the factors mentioned above. You might notice tarnishing at the edges or areas of high friction first.
How Can I Prevent Tarnishing in Gold-Plated Sterling Silver?
Proper care can significantly extend the life of your gold-plated sterling silver items and minimize tarnishing:
- Store Properly: Keep jewelry in airtight bags or containers, ideally lined with anti-tarnish cloths, to limit exposure to air and pollutants.
- Handle with Care: Avoid unnecessary handling to minimize wear and tear on the gold plating.
- Clean Gently: Use a soft cloth and mild soap to clean your pieces when necessary. Avoid harsh chemicals or abrasive cleaners.
- Avoid Chemicals: Remove jewelry before swimming, showering, or using harsh cleaning products.
What is the difference between gold vermeil and gold plated sterling silver?
Gold vermeil is a specific type of gold plating that must meet certain standards. It consists of a minimum 2.5-micrometer layer of 18-karat gold on a sterling silver base. Gold-plated sterling silver, on the other hand, doesn't have any standardized minimum thickness for the gold layer, which is why it's crucial to know how it was made, to predict how well the plating will stand up to wear and tear over time.
By understanding the factors that influence tarnishing and following proper care techniques, you can significantly extend the lifespan of your gold-plated sterling silver and keep your pieces looking beautiful for much longer.
