Before you make a final choice about the wedding jewelry you'll wear on your finger for the rest of your life, we feel it's important to give you all the information you need to make an informed purchase. In our previous articles, we detailed the different alloys that make up the various materials, and now we're going to tell you all about carats.
The carat of gold, unlike the carat of stones, does not determine its weight, but rather its fineness. It is equivalent to 1/24th of the total weight of the metal in your ring. So, for gold, the higher the carat value, the more gold there is in its composition, and therefore, the higher its fineness. In practice, this means that 18-carat gold is composed of 75% pure gold and 25% metal alloys.
It's important to note that 24-carat gold rings are not the norm in jewelry stores. Pure gold is far too malleable for the jeweller to work with, and so fragile to wear in everyday life! For your wedding rings, we advise you to choose rings made of 18-carat gold (officially called 750 thousandths gold, also noted 750 ‰) so that your jewelry retains its brilliance and beauty over time.
For diamonds and precious stones, it's much simpler: one carat = 0.2 grams. This unit of measurement refers to the weight of carob seeds used in ancient times to value and weigh gems and "light" goods.
The price of a diamond is determined by its carat, which is one of the 4 values for determining the price of your jewelry. The other 3 parameters of a diamond are its color, clarity and cut. Diamonds are internationally defined by the famous 4Cs: Carat - Color - Clarity - Cut. It is important to note that the price of a diamond is completely exponential and does not correspond to "logical" multiples were used to. This means that just because a diamond is twice as big doesn't mean it will be twice as expensive; often the multiples are much higher, on the order of 5 times more, for example.
But your jeweller may choose to use points instead of carats. Don't worry, it's perfectly normal. One carat = 100 points. For instance, if you have 0.6 carats, we'll talk about 60 points. A 0.05-carat diamond earns a rating of 5 points.