Have you ever wondered why some jewelry turns colors, loses its shine, or turns your skin green? Did you know that a lot of "gold" jewelry doesn't contain any gold at all? There is a lot of confusion about the different types of gold jewelry that one can buy these days. Some of it is good, and most of it not so good. Long story short, everything we sell here at KOZAKH is the good kind!

We guarantee you'll love the quality of your KOZAKH jewelry!


Many of our pieces are classified as Demi-Fine, which is one step below Fine, but much better quality than Fashion and Costume jewelry. If you love the look and wearability of fine jewelry, but are also looking for something more on the affordable side, demi-fine jewelry is the way to go! It's high quality and long lasting, and almost indistinguishable from fine jewelry. Plus, it costs about 1/5th - 1/10th the price.

Gold Filled

Gold Filled is the best alternative to fine gold. It is a hybrid metal that is essentially a thick layer of gold “filled” with another metal, like brass or copper. It has a layer of gold that is 50-100x thicker than other more commonly used metals, like gold plated and vermeil. Additionally, the “filling” process creates a much stronger bond between the gold and base metal, so the gold layer is very durable and will not come off for decades.

Will my Gold Filled jewelry tarnish?

We are often asked, will my Gold Filled jewelry tarnish? Before we answer that, we need to clear up a couple things that confuse a lot of people:

What is tarnish? 

Tarnish is simply the build up of corrosion that happens to most metals when they are exposed to air and moisture. Think of the rust that forms on bridges, or that bike you left in your backyard during a rainstorm. That "rusty" layer is ugly, but the good news is it can easily be cleaned! In fact, all jewelry needs to be cleaned at some point. Simply use a jewelry cloth or a jewelry cleaning solution, and your jewelry will look brand new!

So, what's the real real problem you should be thinking about?

The real problem you should be thinking about is your jewelry losing its gold layer. People often confuse this with tarnishing! Most affordable jewelry on the market is Gold Plated. The biggest problem with all Gold Plated, Gold Dipped, Gold Painted, Electroplated, and Vermeil jewelry is that the gold layer tends to wear off very quickly, resulting in discolored splotchy jewelry. This is because the gold layer on Gold Plated jewelry is very very thin, and it is not bonded to the base metal. As the jewelry rubs against your skin, the gold layer rubs off little by little. On top of that, when the base metal becomes exposed, tarnish builds up very quickly!

This is where Gold Filled really shines!

The thick gold layer on Gold Filled jewelry is guaranteed to last for decades! Because the gold layer is so thick, and because it is actually fused to the base metal, you don't need to worry about the gold coming off for a very long time. The gold thickness also makes Gold Filled hypoallergenic for most people. If you can wear 14K Gold on your skin without an allergic reaction, you should have no problem wearing 14K Gold Filled.

So, the final answer is, Gold Filled can tarnish over time, however, it can easily be cleaned! The best part is, you can wear it every day for many many years without worrying about the gold layer coming off. 

Please read our Jewelry Care guide to make sure your jewelry lasts a lifetime.

To learn basically everything there is to know about Gold jewelry, check out our blog post - Everything You Could Ever Want To Know About Gold Jewelry.

Sterling Silver

Sterling Silver is a metal that has been used to make all kinds of valuable goods for thousands of years. Pure Silver is soft and malleable, so the alloy Sterling Silver was created to be a bit more durable. Sterling Silver consists of 92.5% pure silver and 7.5% copper, and is the standard metal used to make fine silver jewelry. We love silver jewelry, and we love layering it with our gold jewelry!

All silver jewelry from KOZAKH is made using .925 (92.5%) Italian Sterling Silver.


14K Gold

14K Gold is the standard for Fine Jewelry. It is durable, lightweight, and has a gorgeous soft yellow color that makes it perfect for all types of jewelry, including wedding rings. 14K Gold is a highly sought after metal for jewelry lovers because it will last forever when cared for properly. If you are looking for excellent quality and wearability that you can keep in your collection forever, 14K Gold is the best choice for you.

14K White Gold

14K White Gold shares all of the same benefits of 14K Yellow Gold. The only difference is the color, which is a light, glossy, silvery/white. This is achieved by mixing Rhodium with the Gold when creating the alloy, and then applying an additional layer of Rhodium plating. Rhodium is one of the rarest and most durable metals on earth, making it perfect for fine jewelry. 

Our Gemstones

All KOZAKH gemstones and pearls are real, and ethically sourced from fair trade suppliers around the globe. Nothing else in the jewelry world comes close to matching the beauty of authentic semi-precious and precious gemstones, which is why they are the main feature on many of our pieces. Find your favorite gemstone on one of our pieces today!