"The Landau Ideal Diamond"

When a round brilliant diamond has been cut to "Ideal" proportions by a master cutter, it is a splendor to behold.

 The Ideal Cut Diamond describes a round brilliant diamond that has been cut to exact and mathematically proven proportions. Its symmetry, with 58 exactly placed facets, produces the ultimate in lustre and beauty. When a diamond is cut to the ideal proportions all of the light entering from any direction is totally reflected through the top and is dispersed into a display of sparkling flashes and rainbow colors.

PROPORTIONS OF THE IDEAL CUT

A Premium Cut diamond demonstrates subtle variations from the Ideal Cut. Although dimensional differences affect a diamond's reflection of light, a Premium Cut still achieves a harmonious balance between it's proportions and the display of brilliance.

THE IDEAL CUT

Light entering the diamond reflects internally from facet to facet and is reflected back through the top only, creating maximum brilliance

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TOO DEEP

When a diamond is cut too deep, light leaks out of the bottom, brilliance is lost and the center of the diamond will appear to be dark

TOO SHALLOW

When a diamond is cut too shallow, light leaks out of the bottom, brilliance is lost and the diamond appears watery, glassy and dark

 1993 J. Landau Inc