Ruby and sapphire are the same mineral, with color as the only distinguishing criterion. Red corundum is classified as ruby, and blue, pink, yellow, and all other gem-quality hues fall within the sapphire family.
Elemental Detail
A figure 8 safety clasp fabricated to match the piece's metal and karat sits at the closure zone with the same color, surface, and weight as the adjacent components.
Industry Insight
Two flat closures, two different solutions. The box clasp inserts a tongue into a housing, the foldover clasp hinges a plate onto a bar. Both stay flat against the wrist or neck, but the geometry of how they lock and how they look is entirely different.