Does Gold Plated Sterling Silver Tarnish? A Comprehensive Guide
The question of whether gold-plated sterling silver tarnishes is a common one among jewelry lovers. The short answer is: yes, but less than sterling silver alone. Understanding why requires a look at the nature of both gold and sterling silver.
Sterling silver, an alloy of 92.5% silver and 7.5% other metals (usually copper), is prone to tarnishing. This discoloration occurs because silver reacts with sulfur in the air, forming silver sulfide, a dark, usually black coating.
Gold, on the other hand, is a noble metal, highly resistant to tarnishing and corrosion. This inherent resistance is why gold is often used to plate other metals, providing a protective layer and a lustrous finish.
So, when sterling silver is gold-plated, the gold layer acts as a barrier, significantly slowing down or even preventing the underlying silver from tarnishing. However, it's crucial to understand that this protection isn't foolproof and depends on several factors:
How Thick is the Gold Plating?
The thickness of the gold plating is paramount. A thicker gold plating will provide more substantial and long-lasting protection against tarnishing. Thinner plating will wear away more quickly, exposing the sterling silver underneath and leading to tarnishing. Unfortunately, this information isn't always readily available to the consumer.
How is the Gold Plated?
The plating process itself can impact longevity. High-quality plating techniques result in a more durable and even coating, offering better protection against tarnishing. Poorly applied plating may wear off more easily.
How is the Jewelry Handled and Stored?
Even with a thick and well-applied gold plating, improper handling and storage can accelerate the tarnishing process. Exposure to harsh chemicals, perfumes, lotions, and even sweat can gradually wear away the gold plating. Similarly, storing gold-plated sterling silver in a damp or poorly ventilated environment can increase the risk of tarnishing.
What About Gold-Filled vs. Gold-Plated Sterling Silver?
It's important to distinguish between gold-filled and gold-plated items. Gold-filled jewelry contains a much thicker layer of gold bonded to a base metal (often sterling silver), resulting in significantly greater durability and resistance to tarnishing compared to gold-plated pieces. Gold-filled items are generally more expensive, reflecting the increased amount of gold used.
How Can I Prevent Tarnish on My Gold-Plated Sterling Silver?
While some tarnishing is inevitable over time, you can take steps to slow it down and extend the life of your jewelry:
- Proper Cleaning: Use a gentle jewelry cleaner specifically designed for gold-plated items. Avoid harsh chemicals or abrasive cloths.
- Careful Handling: Remove your jewelry before engaging in activities that could expose it to chemicals or damage the plating, such as cleaning, swimming, or exercising.
- Appropriate Storage: Keep your jewelry in a cool, dry place, preferably in a soft cloth-lined box or pouch, to prevent scratches and exposure to moisture and air.
Does Gold-Plated Sterling Silver Need to be Polished?
While gold itself resists tarnishing, the gold plating on sterling silver can eventually wear down, exposing the underlying sterling silver which will then tarnish. Gentle polishing with a soft cloth can help maintain the shine and luster of the gold plating, but be cautious not to use harsh polishes that could remove the plating.
In conclusion, while gold plating offers significant protection against tarnishing, it's not a guarantee of everlasting shine. The thickness of the plating, the quality of the plating process, and proper care and storage are crucial in preserving the appearance of your gold-plated sterling silver jewelry. Understanding these factors will allow you to make informed decisions and enjoy your jewelry for years to come.
