
When you’re shopping for gold jewelry, the options can be overwhelming. You might see beautiful pieces at different price points and wonder why some are so much more expensive than others. The simple answer is often the material itself—is it gold-plated or is it pure gold?
At RT Kataoka, we specialize in pure Japanese gold, and understanding the difference is key to making a smart purchase.

What is Gold-Plated Jewelry?
Gold-plated jewelry is made by applying a very thin layer of gold over a base metal, like copper or nickel. Think of it like a coat of paint. This process makes the jewelry look like solid gold but keeps the cost low.
While gold-plated pieces can be a fun and affordable way to wear the latest trends, they come with a few major drawbacks:
- It’s Not an Investment: Because there is only a minuscule amount of actual gold on the piece, it holds almost no intrinsic value.
- It Doesn’t Last: The thin gold layer can easily chip, wear off, and tarnish over time, especially with frequent use. It’s not meant for long-term wear.
- It Can Cause Skin Irritation: The base metals underneath can react with your skin, causing irritation or discoloration.

Why Choose Pure Japanese Gold?
In contrast, pure gold jewelry is what people typically think of as “real” gold. This jewelry is made from a solid alloy of gold and other metals (like silver or copper) to make it durable enough for everyday wear. The purity is measured in karats (e.g., 24K, 18K, or 14K). At RT Kataoka, we pride ourselves on offering authentic, high-quality Japanese gold, known for its exceptional craftsmanship.
Here’s why pure gold is the better choice:
- A Lasting Investment: Gold has historically maintained and increased its value. A piece of pure gold jewelry isn’t just an accessory; it’s a tangible asset that you can pass down through generations.
- Enduring Beauty: Pure gold holds its color and luster for a lifetime. It won’t tarnish or wear away, meaning it will always look as beautiful as the day you bought it.
- Hypoallergenic: The higher the karat, the purer the gold, which means less chance of skin irritation from other metals.

When you buy a piece of pure gold from a trusted dealer like RT Kataoka, you’re not just buying a piece of jewelry. You’re investing in quality, beauty, and a piece of value that will last a lifetime.
Ready to find a piece that will last a lifetime? Visit one of our branches in Kawaguchi, Saitama, Okachimachi, or the Philippines, or explore our collection online today.