Moscow physicists offer jewelers innovation diamond marking techniques

Moscow physicists offer jewelers innovation diamond marking techniquesScientists at the Lebedev Physical Institute in Moscow have developed three-dimensional diamond marking techniques that could be employed by jewelers

Scientists at the Lebedev Physical Institute (LPI) in Moscow have developed three-dimensional diamond marking techniques that could be employed by jewelers, the Institute announced through its own news agency FIAN-Inform. ?Most of the diamonds produced in the world, about 80% of those, are only fit for technical uses. The remaining 20% are of jewelry quality and much more expensive. The price varies considerably depending on the weight and quality of a precious stone; therefore the development of nondestructive diamond markings that can?t be seen with the unaided eye, according to the Kimberley standard, is of paramount importance for today?s jewelry industry,? FIAN quoted Andrei Ionin, the head of LPI?s gas laser lab, as saying. One of the two methods developed at LPI is based on the impact that femtosecond laser emission has on a diamond. The emission is said to create in the precious stone an increased concentration of what physicists call ?vacancies,? or defects in a diamond?s crystal lattice that have no carbon atoms...