Jewelry: Diamonds are the most famous and expensive stones used in jewelry, https://www.mcguirediamonds.ie/collections/halo-laboratory-grown-diamond-engagement-rings . They are used to make rings, earrings, bracelets, necklaces and other jewelry. Diamonds are especially popular in engagement rings, as they symbolize the longevity and strength of a relationship.
Industry: Because of their hardness (diamond is the hardest material on Earth), diamonds are used in industry to make cutting and grinding tools. Diamonds are used in drills, sharpening stones, and other tools for working hard materials.
Technology and Science: In recent decades, diamonds have been used in high-tech applications including lasers, optical devices and quantum computing. Diamonds are used as information carriers and in scientific research due to their unique conductivity and other specific properties.