The average diamond engagement ring in the U.S. is about one carat, but size varies by location and age. A diamond’s shape ...

Researchers from HSE University, RAS, and Skoltech have compared actual specific energy consumption in the production of diamonds using traditional (mining) and innovative (synthesis) methods.

Rare Carat has rewritten that story. Launched in 2016 as a simple comparison engine — said to be the “Kayak for diamonds” by Forbes — the company has grown into America’s highest-rated online jeweler ...

Sotheby’s Hong Kong will offer a 102.39-carat D-color flawless oval diamond in a single-lot combination online and live auction. It will be only the eighth D color internally flawless or flawless ...