Certification is proof of a diamond's 4C's grading.
Although many diamonds look the same, they are not all going to be of equal quality. Diamond
certification is the written proof of a diamond's attributes. Without it, you have no assurance the
diamond you are buying is worth the price you are paying.
With diamond certification, you know the precise grading for each of the 4C’s – carat weight, cut, color
and clarity – and, therefore, the diamond value.
Certification gives you the information you need to assess a diamond's fair market value. It
also allows you to make informed comparisons with other diamonds either in the same jewelry
store or in another and find out how much you should spend on a diamond.
Diamond certificates are issued by independent gemological laboratories. There are several
grading laboratories, the most prominent being: the Gemological
Institute of America® (GIA); the American Gem Society®Laboratory (AGS); the International Gemological Institute (IGI); and
Gemological Science International® (GSI). When you buy a certified
diamond from a trusted jeweler, ask to see the diamond certification reports that will accompany the
diamond when you purchase it.
The Leo Diamond® comes with an additional certification from
GemEx® Systems.
The most critical aspect of the inherent beauty of a diamond is its brilliance. Every Leo Diamond®
comes with an additional certification from GemEx® Systems that verifies its "Return of Light" — the
level of brilliance your diamond achieves. GemEx® is the leader in brilliance certification. The certification
it provides is based on scientific measurements of white light, colored light and scintillation taken with a
GemEx® BrillianceScope™.
The Leo Diamond® was the first diamond ever independently and
individually certified to be visibly brighter. Your GemEx® certification is
proof of your Leo Diamond's superior brilliance.
Authorized Leo Diamond jewelers let you compare The Leo Diamond®'s brilliance with other diamonds through a GemEx viewer.
