Leo Challenge

As of today, 95% of the


"Leo Challenge" participants have experienced the unparalleled brilliance of The Leo Diamond®.

Every Leo Diamond is measured and certified for superior Return of Light and comes with written certification. To prove our point about The Leo Diamond®’s superior diamond brilliance, we created the “Leo Challenge”.

Participants are invited to view two diamonds through Brilliance Viewer: The Leo Diamond® and the other, a conventionally cut 58-facet diamond of comparable carat weight, color and clarity, after which participants choose which is visibly brighter. Of the more than 2.4 million people who have participated thus far, an overwhelming majority - 95% - chose The Leo Diamond® as brighter than the other diamond. To take the “Leo Challenge” yourself, kindly visit the nearest MaBelle or MADIA store.