The Reason More People Are Wearing Lab-Grown Diamonds Like Meghan Markle's

Because their supply chain tends to be shorter, lab-grown diamonds can cost anywhere from 40 to 60 percent less than mined diamonds. Pricing is determined by the shape and, of course, the four Cs. According to the International Gemological Institute, diamonds with a sharper, more distinct color grade will be more expensive. Graded on a five-level scale of excellent (light beautifully reflects) to poor (no sparkle), a diamond's shape, depth, and symmetry are key, too. Imperfections in clarity can potentially alter the cost. The weight of the diamond is another factor: the heavier the stone, the higher the price. The popular round-brilliant shape tends to be the priciest.