A push button clasp serves chain bracelets, tennis bracelets, and heavier link necklaces because it balances security with single-hand operation.
Elemental Detail
Multitone gold jewelry developed as goldsmiths recognized that different alloy compositions (yellow gold's copper-silver mix, white gold's palladium or nickel base, rose gold's higher copper content) could be constructed in combination, the contrasting alloy zones worked or cast together to produce a piece whose color variation is metallurgical rather than applied.
Visually Speaking
Contrasting gold colors placed deliberately within a 14kt multitone design create visual depth and highlight structural elements that a single-tone piece flattens, which is why multitone pieces tend to read with more complexity at close range.