If you are visiting Mika & Co. you are most probably going to shop for gold jewelry. Our gold and diamond jewelry is mainly crafted in 10kt gold. 

You are probably quite familiar with the word “karat” in terms of gold, that the higher the karat, the more expensive it will be… 

YEs, he short answer is that higher karats means more gold, but there’s more to it.

What does it all really mean? What are karats really? 



The measure of purity, or fineness, of gold simply means the gold-to-metal ratio.

You may have previously thought that gold is gold, but the fact is that gold in jewelry must be alloyed to other metals in order to obtain a decent strength and malleability to work with and the color you want. Some pieces of gold will contain more actual fine gold than others, and some pieces will have more additive metals than others. Let’s take a look at a few terms that you may come across when considering your gold purchase!

Carat: Not to be confused with Karat in North America, a Carat is a unit of measurement used for precious stones. Equal to 200 milligrams. Outside of North America, Carat is used in the same context as Karat.

Karat: Unit of measurement for fineness of gold, with the higher numbers containing more gold and 24K being the finest.

Malleable/Malleability: How capable a metal is of being deformed using compressive force. Ex. Malleable metals can be hammered or rolled into thin sheets.


Common Gold Purities

Gold is a very flexible resource and is used in many different industries for various purposes, depending on the purity.

However, a bit more than 75% of gold used each year is for making jewelry, there’s many other purposes. Here’s a list of stamps that you might find on a piece of gold, what they mean, and what they can be used for.

  • 375: 37.5% gold, or 9K. In the US, the minimum standard for gold is 10K. Many other countries allow this to be marketed as gold and it’s been used from jewelry to dental purposes.
  • 417: 41.7% gold, or 10K gold. Very commonly used in jewelry in the US and very strong. Great for jewelry for those who work industrious jobs who need something that will hold up.
  • 585: 58.5% gold, or 14K gold. Good, strong gold but with a bit more gold than 10K.
  • 750: 75.0% gold, or 18K gold. Much more pure than 14K, still has good strength with a wonderful balance in purity.
  • 916: 91.6% gold, or 22K gold. This is probably the softest and most pure gold that you would want to have for a piece of jewelry.
  • 999: 99.9% gold, or 24K gold. This is the purest that you can buy, and although purity can be up to six nines fine, or 999.999, it’s highly rare to find it so pure. 


What are Karats?

Karats, spelled ‘carats’, are the little numbers stamped on a piece of gold in the format, for example, ‘10K’ or ‘10KT’ and it serves as a reference for the type of gold it is stamped on. It refers to the actual gold content in that particular piece of jewelry.

The higher the Karat, the more pure the gold.

Lower Karat jewelry contains less gold and more of an alloy metal, such as copper, iridium, silver, or palladium.

Other metals are added to gold to strengthen it from its malleable state or even to enhance color, such as in rose gold.

Mika & Co. only manufactures gold alloys with non-allergenic metals added: no nickel or lead are used in the process. Therefore, all our jewelry is safe and can be worn and enjoyed by everyone.