PARIS — De Beers has called time out on its test-run of lab-grown diamond engagement rings, the company said Wednesday. Going forward, its lab-grown subsidiary Lightbox will continue to focus on its ...

A simple finger test could help detect lung cancer, experts say. Dubbed the 'Schamroth window test' or 'diamond test,' the five-second trick lokos for clubbed fingernails, which is a telltale sign of ...

The park is known for its valuable diamonds and “finders, keepers” policy. A woman found a 2.3-carat white diamond at a popular national park known for its gems, and now she plans to use it for her ...