How 2023 Became the Year of the Lab-Grown Diamond

In New York, a stretch of 47th Street is known as the Diamond District for the countless gem shops and appraisers that occupy just about every storefront and office. Some 40 blocks south, Pandora recently brought to life a competing vision for how stones are made, bought and sold.

During New York Fashion Week, the jewellery retailer shut down Astor Place to host a splashy party it dubbed the “lab-grown diamond district,” attended by…