The bypass ring treats negative space as material. Its open silhouette contributes to perceived size and structural complexity as directly as the metal does.
Stone Story
Marcel Tolkowsky did the math in 1919 and the proportions he calculated (table, crown, pavilion angles all optimized together) are still the benchmark for what an ideal cut diamond means.
A Notable Quality
For someone with metal sensitivities, the alloy composition of an 18kt white gold piece is worth specifying: palladium-based alloys are generally more compatible with sensitive skin than nickel-based alternatives, and asking the question at purchase is the practical way to ensure the right choice.