Collecting antique and estate fine jewelry requires recognizing hallmark assay stamps, diamond cutting evolution, and historical design motifs.

1. Historical Fine Jewelry Design Eras

• Victorian Era (1837–1901): Yellow gold, romantic motifs, serpent rings, rose-cut diamonds, seed pearl accents, and mourning jewelry.
• Edwardian Era (1901–1915): Fine filigree lacework, debut of platinum setting architecture, bow and garland motifs, and Old European cut diamonds.
• Art Deco Era (1920–1939): Geometric symmetry, high-contrast caliber-cut sapphires and emeralds, platinum stepped bezels, and bold architectural lines.