What are carats? Is pink gold really gold? In this brief explanation we will tell you a little about gold, one of the most nobles and precious metals on Earth, and whose origin leads us to supernovas.
Gold has a lots of peculiarities that make it special. It is, for example, a very dense metal, and the best conductor of electricity. However, for jewelry it is important to know that gold, in its pure state, is a very ductile and malleable metal - that is, it is easy to change shape even when cold. That is why jewelry uses gold alloys: when mixed with other metals, it acquires the necessary hardness to last forever.
What are carats?
There are two "types" of carats: the one of mass and the one of purity.
The carat of mass, abbreviated "ct" by its word in French, "carat", is used in precious stones and is basically a unit of weight that is equivalent to one fifth of a gram.
The carat of purity is abbreviated as K (from the Greek "katharótita", which means "purity"). This second carat is the one we use to measure the purity of gold, and basically explains how much of an alloy metal is gold: 24 carat means 100% purity, 18 carat means that the alloy contains 75%, 12K is 50%. The rest of the metal is a combination of other metals.
Alloys and gold of different colors
Gold can be combined with other metals to make different colors: yellow, white, and pink are the most classic colors of gold, although it continues to innovate to create new colors! The purer the gold, the more yellow it will look, that is why a 22K gold ring will look more yellow than a 14K gold ring.
What is platinized?
Platinized is a finish that is typically given to white gold to make it more platinum-like, and consists of a rhodium bath. It is the most common thing to see in fine white gold jewelry, so many people have a different idea of how white gold actually looks. The natural white gold is in fact a beige tone, and keeps a bit of the yellow tone of the gold. Therefore, if you want very silvery white gold, platinized is for you!