A wide variety of names have been used for diamonds that have been made by people. In the early days, the names “synthetic diamonds” and “man-made diamonds” were most often used. Synthetic diamonds was the more scientific name and the name used among technical people. Man-made diamonds was a name used by much of the…

Contrary to some marketing messages, lab-grown diamonds and natural diamonds are not identical in every way. Lab-grown diamonds are produced at Earth’s surface by two different processes: HPHT (high pressure high temperature) and CVD (chemical vapor deposition). Diamond crystals grown in these manufacturing processes inherit characteristics of the manufacturing process that can be used to…

An ability to positively identify natural diamonds, lab-grown diamonds, and the many imitation materials is essential today for several reasons. First, significant price differences exist between these materials. Second, diamond customers are cautious and want to know exactly what they are buying. And, third, the reputation of every business that sells diamonds is at risk.…

Lab-grown diamonds have been produced since the 1950s. Nearly all of the earliest lab-grown diamonds were put to industrial uses such as making abrasive granules for cutting, drilling, and polishing tools. At that time, lab-grown diamonds had color and clarity issues which made them unsuitable for use as gems. One of the main incentives for…

Lab-grown diamonds are diamonds that have been made by people. Just like the natural diamonds that form deep within the Earth, lab-grown diamonds are a crystalline form of carbon with a cubic (isometric) crystal structure. Lab-grown diamonds have chemical, physical, and gemological properties that are the same as natural diamonds. However, the manufacturing processes used to produce…