Stone age craftsmen in China were polishing objects using diamond 2,000 years before anyone else had the same idea, new evidence suggests. Quartz was previously thought to be the abrasive used to ...

Take, for example, a 1-carat princess-cut diamond. A natural stone would cost roughly $2,500, versus about $500 for a same-quality lab-grown equivalent, Sompura said. "Prices of lab-grown diamonds ...

The popularity of synthetic stones has sent the market for natural diamonds crashing ... engagement rings featured a lab-grown diamond as a center stone, up from 46 percent in 2023 and 12 percent ...