What we mean when we say "visually indistinguishable from a perfect, mined diamond to the naked eye"
Anyone who says they can tell the difference with the naked eye (i.e. looking unaided, with no special tools or props) between a perfect mined diamond and the top-quality 5A Cubic Zirconia such as that we make and use in our jewelry is:
lying
only giving anecdotal evidence based on a flawed experiment set-up
comparing diamonds to poor-quality CZ manufactured by companies trying to save money on quality.(i.e. not CubicZirconia.com cubic zirconia)
trying to sell you diamond jewelry
or some combination of the above.
Allow me to explain...