Everything you need to know about 18-karat gold

At Sébastienne Jewelry, all of our jewelry is in 18-karat gold. But what does the name "18-karat gold" mean? 

What is a karat?

A karat is a measuring tool that tells us what percentage of gold and other alloys that are mixed and melted together. This measurement is counted on 24: pure gold, without alloy, is called 24 karat gold. However, pure gold is a much too soft material that can’t be used for everyday jewelry. This is why gold is mixed with alloys like silver, copper or palladium to increase its hardness.

18K gold means that jewelry contains 18 parts pure gold and six parts alloys. Jewelry made with 14K gold means that there are 14 parts pure gold and 10 parts allows. Finally, 9K gold means that jewelry contains 9 parts pure gold and 15 parts alloys.

Gold karat schema

Gold color simply depends on the amount of alloys used. Palladium and silver will give the white color of palladium white gold, copper will give the red gold. But jewelry in 18-karat yellow gold will have exactly the same percentage of gold (ie 75%) as jewelry in 18-karat red gold or 18-karat palladium white gold; only the percentage of alloys changes.

Why do we use 18-karat gold for our jewelry? 

We use 18K gold for body jewelry because of its high percentage of gold, it keeps its stainless and non-allergenic qualities.

Also, we want the highest quality for all that makes up our jewelry, and for you.


From Paris with love,

Marine - Sébastienne Jewelry