The Leo Diamond
The Visibly Brighter Leo Diamond. The first diamond ever independently and individually certified to be visibly brighter. Compare a conventional diamond to The Leo Diamond and you can easily see the difference for yourself. The Leo Artisan Diamond. The design of its facets produces a level of brilliance so remarkable, it scores THREE VERY HIGH ratings on the GemEx Light Performance Report. GemEx Systems is an independent laboratory that provides certification stating the diamond's measurement of fire, sparkle and brilliance.