The color of artificial diamond depends on chemical additives and irradiation

The color of an artificial diamond is determined by the addition of various chemical elements and irradiation.

The 129 carat yellow crystal was grown in 400 hours by Russian New Diamond Technology in 2020.

The largest cut laboratory diamond as of mid-2024 weighs 75 carats, its 190-carat harvest has been growing for about nine months.

MOSCOW, October 1 - RIA Novosti. The color of an artificial diamond is determined by the addition of various chemical elements, as well as by irradiation, in particular, the blue tint is obtained with the help of boron, NTI expert on new materials and technologies Evgeny Vishnevsky told RIA Novosti.

“The palette of a laboratory diamond is determined by what gets into the chamber along with carbon. Nitrogen gives yellow, boron gives blue and blue. Growth without additives often leads the stone to brown and gray, and colorless remains the most difficult task and requires the longest cycle. Pink and green are obtained after synthesis, by irradiation,” he said.

Speaking about creating the shape of stones, Vishnevsky cited the example of a 129-carat yellow crystal, which was grown in 400 hours by the Russian New Diamond Technology in 2020. The largest cut laboratory diamond as of mid-2024 weighs 75 carats, its 190-carat harvest has been growing for about nine months. The heaviest laboratory crystal in world registries is 150 carats.