WHAT IS CCTW?
CTTW is an acronym used for “carat total weight,” or “total carat weight.” It’s a metric that measures the total weight of all of the diamonds in a specific piece of jewelry, such as a channel set diamond ring. The carat weight (CT) of one diamond and the total carat weight (CCTW) of a diamond ring are very different numbers - Let us explain the difference..
CTTW VS. CARAT
As seen in the diamond carat weight section, the carat weight of a diamond refers to the amount the diamond weighs, not its size. One carat unit weighs exactly 200 milligrams and depending on its cut, its diameter can range f rom 5.60mm to 6.60mm. One carat unit weighs 200 Carat weight, abbreviated to 200.ct. The acronyms “CTTW” or “CTW” refers to the total weight of all of the diamonds in a specific piece of jewelry. Unlike ct., which is used to show the weight of a loose
diamond or center stone, CTTW is only used to display the total carat weight of all diamonds. Many engagement rings only contain one center diamond. This means the ring’s total carat weight (CTTW) will be the same as the carat weight of the center stone. Other rings, there may be some small diamonds lined up on the band. In this case the total number of small diamonds will add up to a total carat weight, the carat weight of center stone will be added separately. The total carat weight, or CTTW,
of this ring is calculated by adding together the carat weight of any additional set diamonds and the weight of the center stone. The carat weight of a diamond — or, in this case, the total carat weight of a ring — is only one of several factors you should consider when you’re choosing an engagement ring.
Other factors, such as a diamond’s cut, color and clarity, also play a role in its appearance and value. Known as the 4 Cs, these factors all interact with each other to affect the way a diamond looks and the amount you’ll pay for it. We’ve covered these in more detail, as well as what you should look for, in our guide to buying a diamond.
CCTW AT A GLANCE
Carat weight, which is abbreviated as ct, cw or CW, only refers to the weight of the center stone on its own. CTTW, or total carat weight, always refers to the total weight of all diamonds in a ring, bracelet, earrings or other pieces of jewelry. When you’re viewing a setting on its own, it’s the weight of the halo or pavé diamonds. For a complete ring, it’s the weight of all small diamonds and the center stone.While a ring with a large total carat weight can look impressive, it’s important to
remember that the weight of the center stone is usually the biggest factor in determining an engagement ring’s value.