Frequently Asked Questions Have questions for us? Email us at [email protected] or ask us on Facebook or Twitter What Grading System is Used? The patented BrillianceScope® imaging spectrometer measures the light performance of a diamond using 3 Light Performance categories: Brilliance (white light) Fire (color light) Sparkle (scintillation) How is a diamond’s cut addressed? GemEx measures every diamond for Light Performance. Does GemEx evaluate treated stones? The BrillianceScope does not evaluate treatments. However, diamond treatment may impact Light Performance. Is there a size requirement? GemEx measures stones from 0.01 carat up to 12mm with the BrillianceScope®.
