• Grey Facebook Icon
  • Grey Twitter Icon
  • Grey Instagram Icon

© 2017. Fire Polish Diamonds. All rights reserved.

info@firepolishdiamonds.com | 1-855-805-3473 (FIRE)

DIFFRACTION GRATINGS TO IMPROVE “FIRE” 

GEMS & GEMOLOGY, 2009

A new microlithography process developed to create high-resolution diffraction grating patterns on portions of certain facets can improve the dispersion of light and thus the amount of “fire” in a diamond. These Nanocut plasma-etched diamonds can be identified with magnification by the presence of small, unpolished-appearing areas on the facets where the grating pattern has been created. Round brilliant–cut diamonds displaying such patterns will be classified by the GIA Laboratory as modified round brilliants; as such, they will receive color and clarity grades, but not a cut grade.