CTW stands for carat total weight. It is used to evaluate jewelry that contains multiple diamonds throughout the piece. Carat total weight is one of the factors used to determine the value of diamond jewelry.
A carat is equal to 200 milligrams. Though the weight is the same, the size of a carat may change depending on the type of gem being measured. The reason for this difference is that gems have different densities.
The shape and cut of a diamond can make it difficult to effectively judge the carat weight of the stone. For this reason, diamond weight estimators take these factors into account to provide consumers with information about the value of their piece.Learn More
Contrary to a popular belief, diamonds do not actually need to breathe. The common misconception is that because diamond rings generally have holes, that the diamonds must breathe oxygen, or that it somehow helps determine if the stone is real.Full Answer >
A common process for mining diamonds is to remove and process kimberlite ore. Kimberlite ore can be found in underground mines and open pits and often contains a small amount of diamonds that must be separated from the ore. The process of mining can require several months or longer, depending on the size of the mine.Full Answer >
The best way to find a diamond is to look near a deep-source volcanic eruption. Diamonds are formed in the intense heat and pressure of the earth's mantle, and deep-source volcanic eruptions tear out pieces of the mantle, carrying them to the surface. There have been no deep-source eruptions since their identification, but diamonds are evidence of their existence.Full Answer >
Diamonds are cut using blades, lasers or other diamonds with techniques that include cleaving, sawing and bruting. During the cutting process, a diamond can lose up to 50 percent of its original weight.Full Answer >