Oxidized silver is a surface finish. It is applied later to the 925 sterling silver. This gives the material a darker color. It is possible for the oxidized layer to fade over time due to wear and tear.
Gilding is the covering of an object with a layer of gold. This article is dipped in a gold bath which causes the silver to be completely covered with a layer of gold. Showing a beautiful glossy finish with a layer of real gold which is also called silverplated or goldplated.However, this is a minimal layer and can wear off depending on the acidity of your skin and the frequency of wearing the jewelry.
Goldfilled comes from America, where it is already used for the manufacture of jewelry with a "touch of gold" for an affordable price. The Goldfilled remains on color, is durable and the 14karaats gold layer is thick enough to enjoy the warmth of gold for a long time. Goldfilled is generally well tolerated by people who are allergic to metals other than gold.
The term carat indicates how much pure gold there is per 1,000 parts in a piece of jewelry. The higher this value, the more gold. In 9 carats there are 375 parts of pure gold, denoted by 375/1000.
According to waarborgwet Nederland, this is too low a content to call it gold. That is why we call it 9 carat.
Jéh Jewels gold jewelry line is made of gold. This carat content is the most used in the Netherlands due to its hardness and color. Pure gold is too soft to make portable jewelry, therefore, other metals are used. Often silver and copper are used so that you can continue to speak of 'precious metals'. Gold has 585 of 1000 parts that are pure gold. The remaining 415 parts therefore consist of the other metals.