Can a jeweller tell a lab grown diamond?

THE ANSWER

Not with the naked eye. Not with a standard loupe. Lab diamonds look identical to mined diamonds under normal examination. A skilled gemologist needs specialised equipment. Spectroscopy machines detect subtle differences in crystal growth patterns. Nitrogen content varies slightly. Some labs laser-inscribe the girdle with "lab-grown" text, visible only under magnification. Without that inscription or lab equipment, even experts cannot distinguish them. That's because they're the same material. The identification relies on origin markers, not quality differences.

NEXT STEP

Explore the lab-grown engagement ring collection, or read the value-focused buyer guide if you are still comparing whether lab diamonds fit your priorities.