The round diamond began to rise in popularity in 1919 with the publication of Marcel Tolkowsky's thesis "Diamond Design: A Study of the Reflection and Refraction of Light in Diamond". Tolkowsky's work described the ideal proportions of a round cut diamond for maximizing light return (or brilliance) and dispersion (or fire). The original Tolkowsky specifications (53% table, 59.3% depth, 34.50 crown angle, visible culet) have since been modified as the cut mechanics for round diamonds have perfected over time. These theoretical advancements, as well as advancements in technology (such as the use of lasers in diamond cutting), have been adopted by diamond manufacturers to produce the incredibly brilliant cuts we see today in well cut round diamonds.
Today we have received over 1.2 Million in loose round diamonds.
Round Diamond 1.00ct EGL USA F Si2 $3200.00
Round Diamond 1.00ct EGL USA E SI3 $2900.00
Round Diamond 1.01ct EGL USA D SI2 $4000.00
Round Diamond 1.03ct EGL USA E SI2 $3300.00
Round Diamond 1.03ct EGL USA D SI2 $3500.00
Round Diamond 1.07ct EGL USA F SI2 $2900.00