Scientists have synthesized and created diamond alternatives that are so ostensibly close to a mined diamonds that even certified gemologists require scientific testing equipment to tell the difference. Breakthrough advances have made the latest faux diamonds closely mimic the properties of mined diamonds. They cut glass, they refract light into perfect hearts-and-arrows, and they have superlative fire and brilliance. In fact, in almost all measurable variations, they match or are superior to mined diamonds.